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Congress for Progressive Change

The Congress for Progressive Change (CPC) was a Nigerian political party founded in 2009 to oppose the long-ruling People's Democratic Party (PDP) ahead of the 2011 general elections. Primarily led by Muhammadu Buhari, a former military ruler known for his emphasis on discipline and anti-corruption efforts, the CPC positioned itself as a vehicle for electoral reform and governance overhaul in a nation plagued by electoral irregularities and entrenched patronage networks. Buhari served as the party's presidential candidate in 2011, garnering significant support particularly in northern Nigeria but ultimately placing second to incumbent Goodluck Jonathan amid allegations of vote rigging that underscored the challenges of Nigeria's democratic institutions. The CPC's most notable achievement came through its strategic dissolution and merger in 2013 with other opposition groups, including the Action Congress of Nigeria and the , to form the (). This coalition-building effort, driven by Buhari's influence, enabled the APC to unite fragmented progressive forces against PDP dominance, culminating in Buhari's presidential victory in 2015—the first peaceful from an incumbent party since Nigeria's return to democracy in 1999. Post-merger, CPC loyalists maintained a distinct bloc within the APC, advocating for northern interests and Buhari's policy priorities, though recent internal divisions over 2027 prospects have highlighted ongoing factionalism and marginalization claims within the ruling party.

Formation and Early History

Founding and Registration

The Congress for Progressive Change (CPC) was founded in 2009 by General , a former military head of state, along with associates seeking an alternative to the dominant and fragmented opposition groups. The formation stemmed from dissatisfaction with electoral irregularities and governance failures under the PDP administration, positioning the CPC as a vehicle for progressive reforms emphasizing integrity and national development in anticipation of the 2011 general elections. Following its establishment, the CPC applied for and obtained registration from the Independent National Electoral Commission (INEC), Nigeria's statutory electoral authority responsible for accrediting political parties. This registration, completed in time for the polls, allowed the party to legally participate by fielding candidates at federal, state, and local levels. Buhari's formal affiliation with the was announced on March 17, , solidifying his leadership role ahead of his presidential bid.

Initial Leadership Structure

The Congress for Progressive Change (CPC) was established in 2009 by dissident elements from the (ANPP), initially operating under provisional (protem) executive committees at national and state levels to facilitate registration and organizational setup. Engineer , a founding member, held the position of National Secretary, managing administrative and operational affairs during this formative phase. Muhammadu Buhari's entry into the party on March 18, , after resigning from the ANPP due to internal disagreements, markedly shaped its leadership dynamic; he quickly assumed the role of leader, leveraging his stature as a former military to rally support and direct strategy. By this point, protem executives had been constituted in at least 31 states, enabling rapid grassroots expansion. In January 2011, Prince Tony Momoh, a former information minister, was installed as National Chairman, providing formal stability and legal representation before Nigeria's (INEC) amid preparations for the April 2011 general elections. This structure emphasized Buhari's candidacy for the presidency, endorsed by the party's national executive in December 2010, while Galadima continued as secretary-general to coordinate logistics and communications.

Ideology and Policy Positions

Anti-Corruption and Electoral Reform Focus

The Congress for Progressive Change (CPC) emphasized as a foundational element of its platform, positioning the eradication of graft as essential to restoring ethical governance in . Party leader , drawing on his prior military administration's focus on discipline and accountability, committed to eliminating across public institutions if elected, declaring in April 2011 that a CPC victory would rid of and reinstate morality in leadership. The party's 2011 presidential manifesto under the Buhari-Bakare ticket specifically promised to prevent abuse of executive, legislative, and public offices via enhanced accountability, transparency, and rigorous enforcement of existing anti-corruption legislation, including bolstering agencies like the (EFCC) and (ICPC). CPC's anti-corruption stance extended to systemic reforms targeting revenue mismanagement and impunity, with pledges to audit public sector operations and prosecute high-level offenders without political interference. This approach contrasted with the ruling , which CPC accused of entrenching corruption through patronage networks, as evidenced by widespread allegations of electoral malfeasance in prior cycles. Buhari's candidacy amplified this focus, leveraging his reputation—forged during the 1984-1985 —for toward indiscipline, though critics noted in past efforts. On electoral reform, CPC advocated for structural changes to curb corruption in the voting process, including demands for an independent and adequately funded (INEC) capable of conducting fraud-free polls. The party supported the 2010-2011 reforms under INEC Chairman , such as voter register cleanup via direct data capture machines and enhanced transparency in result collation, which aimed to address flaws from the 2007 elections that opposition groups, including CPC precursors, had contested as rigged. CPC's platform implicitly tied to anti-corruption by promising to eliminate vote-buying, rigging, and undue influence, viewing these as enablers of ; in campaign rhetoric, Buhari vowed to "confront and eliminate corruption in the electoral process" to ensure outcomes reflected public will rather than manipulation. These positions aligned with broader opposition efforts to institutionalize reforms like financial autonomy for INEC and stricter penalties for electoral offenses, though CPC's merger into the (APC) in 2013 shifted implementation to that coalition's framework.

Economic and Security Priorities

The Congress for Progressive Change () emphasized infrastructure-led and reforms as core priorities, viewing systemic graft as the primary barrier to fiscal efficiency and development. At the public presentation of its on April 7, 2011, CPC presidential candidate declared that a CPC-led would create "no more room for crooks," positioning eradication as foundational to unlocking resources for economic advancement and national progress. The party's advocated maintaining a sound macroeconomic policy environment, streamlining operations for efficiency, and safeguarding the independence of economic institutions to minimize leakages and promote investor confidence. A specific focus was placed on power sector overhaul to drive industrialization and reduce Nigeria's reliance on imported energy. CPC pledged to generate, transmit, and distribute 15,000 megawatts of by , expanding to 50,000 megawatts by 2019, with the goal of ensuring 24/7 supply to support , , and small businesses. These commitments reflected a pragmatic approach to addressing chronic underinvestment in utilities, which had constrained GDP growth to around 7-8% annually under the incumbent administration amid oil revenue volatility. On security, CPC prioritized restoring and institutional integrity to combat emerging threats like and communal clashes, tying these to broader failures under prolonged PDP rule. Buhari, drawing on his military background, campaigned on enhancing security force accountability by removing legal immunities for high officials—allowing prosecution of presidents, governors, and their deputies for offenses—to deter elite complicity in instability. The party advocated devolving security responsibilities through constitutional amendments for true federalism, enabling states and local governments to address region-specific conflicts, such as those in the and northern where Boko Haram activities had begun escalating by late 2010. This framework aimed to foster transparent and efficient to security agencies, critiquing the central government's mismanagement that had led to over 1,000 deaths from in 2010 alone.

2011 Election Campaigns

Presidential Nomination and Platform

In January 2011, the Congress for Progressive Change (CPC) held its national convention in , where delegates unanimously adopted , the party's founder and former military , as its consensus presidential candidate for the April 2011 elections, bypassing a competitive primary process. Buhari's nomination reflected his established reputation for integrity and anti-corruption stance, drawing support from northern and opposition voters disillusioned with the ruling People's Democratic Party (). In March 2011, the party selected Pastor , a Lagos-based rights activist and clergyman, as Buhari's to broaden appeal in the southwest. The CPC's presidential platform centered on radical governance reforms to address systemic corruption, insecurity, and economic stagnation, with Buhari framing the campaign as a call for a "revolution" to dismantle entrenched elite interests and restore rule of law. Key pledges included prioritizing national security by strengthening military capabilities against rising threats such as Boko Haram insurgency, which had intensified bombings and kidnappings in the north. On the economy, the platform advocated diversifying from oil dependency through agriculture revival, youth employment programs, and infrastructure investments, particularly in power generation to end chronic blackouts. Buhari committed to a single four-year term to focus exclusively on these priorities without reelection distractions, a promise highlighted in campaign speeches and media interviews to underscore his dedication to over personal ambition. Additional emphases included access to quality healthcare via reforms and equitable resource distribution to reduce poverty, positioning the CPC as an alternative to PDP's perceived patronage politics. The platform's focus drew from Buhari's prior regime's record of prosecuting officials, though critics noted potential authoritarian risks absent from CPC rhetoric.

Legislative and State-Level Contests

In the National Assembly elections held on April 9, 2011, the Congress for Progressive Change (CPC) fielded candidates across Nigeria's 109 Senate seats and 360 House of Representatives constituencies, leveraging the northern support base of its presidential candidate, Muhammadu Buhari. The party secured 7 seats in the Senate, concentrated in northern states including Katsina, Niger, and Kwara, marking a breakthrough for the opposition against the ruling People's Democratic Party (PDP). In the House of Representatives, CPC candidates won 34 seats, with victories in constituencies such as Bauchi's Alkaleri/Kirfi, Kaduna North, and Katsina's Bakori/Danja, primarily in the North-Central and North-East regions. These gains reflected CPC's appeal on anti-corruption and security platforms but fell short of challenging PDP's overall majority, amid reports of logistical delays, voter intimidation, and post-election disputes in several areas. State-level contests for governorships and seats occurred on April 26, 2011, across Nigeria's 36 states. CPC achieved its sole governorship victory in , where defeated the PDP incumbent with approximately 450,000 votes, a result initially contested but affirmed by the in 2012. The party's candidates competed in most states but secured no other governorships, attributing limited success to PDP's incumbency advantages and electoral irregularities, including ballot stuffing and result manipulations in PDP strongholds. In state Houses of Assembly, CPC won multiple seats in northern states like , , and , enabling minority opposition influence in legislative debates on local and , though exact nationwide totals varied by state accreditation and court rulings.

Post-Election Activities and Challenges

Responses to 2011 Results

The (CPC) contested the 2011 presidential election results, announced on April 18, 2011, which declared incumbent the winner with approximately 59% of the valid votes against CPC candidate Muhammadu Buhari's share. Party leaders, including Buhari, alleged pervasive electoral irregularities, including vote rigging, falsification of results, and non-compliance with electoral laws in multiple states, particularly in the south and PDP strongholds. The CPC demanded a re-run in affected areas and formally challenged the outcome by filing a petition at the in early May 2011. The , in a unanimous ruling by a five-judge panel on November 1, 2011, dismissed the 's petition, stating it "fails in its entirety" due to insufficient evidence of irregularities substantial enough to alter the results or prove non-compliance by or the Independent National Electoral Commission (INEC). Buhari and the CPC appealed to the , which on December 28, 2011, upheld the tribunal's decision and affirmed 's victory, marking the third consecutive loss for Buhari in court challenges. Following the ruling, Jonathan publicly urged Buhari to accept the defeat gracefully, while Buhari criticized the verdict as a setback for electoral but did not incite further unrest. In parallel, post-election violence erupted primarily in northern states, resulting in over 800 deaths and widespread property destruction, triggered by perceptions of fraud among Buhari's supporters. Buhari publicly condemned the violence on April 20, 2011, calling for peace and disassociating himself from the unrest, though a government-appointed later accused CPC elements of contributing to the escalation through inflammatory rhetoric. Despite the presidential setback, CPC officials highlighted modest gains in seats—securing 9 and 69 positions—as evidence of growing opposition strength and voter dissatisfaction with the ruling People's (PDP). Internally, the party viewed the legal defeats as reinforcing the need for broader coalitions against perceived systemic biases in INEC and PDP dominance, setting the stage for future mergers.

Organizational Struggles

The Congress for Progressive Change experienced notable internal leadership conflicts in the period following the 2011 elections, particularly surrounding the national chairmanship. In February 2013, Tony Momoh was installed as national chairman, replacing the inaugural holder, Rufai Ahmed Hanga, amid allegations of procedural irregularities in the transition. Hanga and allied faction members contested Momoh's legitimacy, initiating legal action in the Federal High Court to nullify the elections of Momoh and the entire National Working Committee (NWC). The court dismissed the suits in March and May 2013, citing the plaintiffs' failure to first pursue the CPC's internal mechanisms under Article 18(32) of the party's amended , which mandates exhaustion of intra-party channels before judicial recourse. These proceedings exposed weaknesses in the party's structures, including inadequate adherence to democratic conventions for leadership selection and congresses. Compounding these issues, Hanga's withholding of the CPC's original of registration from the Independent National Electoral Commission (INEC) created administrative bottlenecks, nearly derailing the party's planned merger into the () in early 2013. The dispute, rooted in the chairmanship fallout, delayed INEC and highlighted operational disarray in and protocols. State-level evaluations, such as a 2009–2012 assessment in , further revealed deficiencies in internal , with criticisms of non-transparent primary elections and limited participation in . These organizational frailties, exacerbated by the party's rapid formation as a Buhari-centric vehicle, contributed to its inability to consolidate a robust, nationwide apparatus independent of its presidential figurehead, ultimately hastening the merger strategy.

Merger into the All Progressives Congress

Motivations for Coalition Building

The Congress for Progressive Change (CPC), founded in 2010 and led by as its presidential candidate in the 2011 elections, pursued coalition building to overcome the structural challenges posed by Nigeria's fragmented opposition landscape, where vote splitting had repeatedly enabled the to maintain power since 1999. In the April 2011 presidential election, Buhari garnered 12,184,053 votes (31.7 percent of the total valid votes), a significant showing concentrated in northern states, yet insufficient to defeat PDP incumbent Goodluck Jonathan's 22,495,187 votes (58.9 percent), as other opposition candidates like Action Congress of Nigeria's (ACN) drew 2,203,031 votes (5.5 percent) primarily from the southwest. This electoral arithmetic underscored the imperative for opposition unity, as CPC leaders recognized that independent contests perpetuated PDP dominance by dividing anti-incumbent sentiment across regional bases. A core motivation was to forge a national platform capable of mobilizing resources and voter bases beyond CPC's northern strongholds, integrating ACN's southwestern influence under and the All Nigeria Peoples Party's (ANPP) pockets of northern and eastern support to create a viable alternative for the elections. CPC stakeholders, including Buhari, emphasized that solo efforts had exhausted party finances and organizational capacity after the campaign, where despite strong grassroots mobilization, logistical and funding constraints limited outreach; merger talks, initiated in late , aimed to amalgamate these assets into a single entity for in campaigning and governance preparation. Critically, the addressed PDP's perceived electoral advantages, including incumbency and allegations of , by presenting a consolidated front that could contest results more effectively and appeal to disillusioned PDP defectors; CPC's in May , post-merger announcement, ratified the dissolution into the APC as a strategic pivot to end one-party , with Buhari articulating the merger as essential for "salvaging from misgovernance." This rationale was echoed in joint statements from the merging parties on February 6, , highlighting shared progressive on and economic reform as a unifying against PDP's entrenched rule.

Negotiation Process and Outcomes

Negotiations for the merger of the (CPC) with the Action Congress of Nigeria (ACN), (ANPP), and a faction of the (APGA) began in late 2012, driven by the opposition parties' shared goal of challenging the 's (PDP) dominance. Informal talks among leaders, including CPC's and ACN's , focused on power-sharing formulas to unify regional strengths—CPC's northern base, ACN's southwestern influence, and ANPP's northeastern support—without preconditions on positions to prioritize national unity. By December 2012, the three core parties publicly agreed to merge, emphasizing unconditional collaboration to "rescue " from perceived PDP mismanagement. In January 2013, formal structures emerged as ACN appointed a 19-member merger committee chaired by Tom Ikimi, including governors like and , to negotiate logistics, manifestos, and safeguards against infiltration. CPC and ANPP similarly constituted their committees, facilitating discussions on candidate selection, of key offices (with zoned to the north for Buhari's candidacy), and internal mechanisms. Key agreements included equitable in organs and avoidance of factional dominance, though tensions arose over symbolic elements like the logo, where Tinubu and Buhari reportedly clashed before resolving in favor of a symbolizing unity. These talks addressed logistical hurdles under Nigeria's Electoral Act, requiring dissolution resolutions and (INEC) notification. The process culminated on February 6, 2013, when governors from the merging parties, meeting at Fashola's residence, announced the formation of the (APC), backed by control of 10 states. INEC registered APC on July 31, 2013, after verifying compliance, enabling the new entity to field candidates in the 2015 elections. Outcomes included a consolidated opposition platform with a unified prioritizing , economic reform, and security, which propelled APC to victory in 2015—securing the presidency with 53.7% of votes and majorities in the —ending 16 years of PDP rule and marking Nigeria's first democratic power alternation. The merger preserved CPC's influence through Buhari's leadership while integrating diverse factions, though it sowed seeds for later internal zoning disputes.

Electoral Performance

Presidential Election Results

In the held on April 16, the (CPC) nominated , a retired general and former military head of state, as its candidate. Buhari campaigned on a platform emphasizing anti-corruption measures, security reforms, and economic restructuring, drawing significant support from northern where the party secured victories in 12 states, including , , and . The Independent National Electoral Commission (INEC) reported total valid votes of approximately 39.5 million, with CPC receiving the second-highest share nationwide.
CandidatePartyVotesPercentage
PDP22,495,18758.89%
CPC12,184,85331.98%
ACN2,203,0315.41%
OthersVariousRemaining3.72%
Buhari's performance marked a substantial improvement for opposition forces compared to prior elections, consolidating northern votes against the incumbent dominance, though it fell short of victory amid claims of electoral irregularities in PDP strongholds. Buhari challenged the results in the , alleging widespread rigging and manipulation by INEC, but the court dismissed the petition on June 27, 2011, upholding Jonathan's win as valid. Independent observers, including the , noted improved logistics and over 2007 but highlighted persistent issues like ballot stuffing and voter intimidation that undermined full credibility in some regions.

National Assembly Election Results

In the 2011 Nigerian parliamentary elections held on April 9, the Congress for Progressive Change (CPC) achieved notable gains in the , particularly in northern states where its presidential candidate drew strong support. Despite the (PDP) retaining a majority amid widespread reports of logistical challenges and disputes over results, the CPC emerged as a key opposition force, securing seats that reflected regional discontent with the incumbent administration. In the , comprising 109 seats, the won 7, primarily from constituencies in , , , and Nasarawa states. These victories included senators such as Al-Mustapha Ahman from Niger East and Saidu Dansadau from Zamfara North, contributing to a fragmented opposition bloc alongside the Action Congress of Nigeria (ACN) and All Nigeria People's Party (ANPP). The , with 360 seats, saw the capture 34, concentrated in the North-West and North-East geopolitical zones, including wins in (e.g., Yusuf Ziga from Kano Central) and . This represented a modest but significant incursion into PDP strongholds, with CPC candidates prevailing in direct contests through voter mobilization on anti-corruption and security platforms. Official tallies from the Independent National Electoral Commission (INEC) confirmed these outcomes following supplementary polls and tribunal rulings in contested areas.
ChamberTotal SeatsCPC SeatsKey Regions of Strength
Senate1097North-West (Kano, Katsina), North-Central (Niger)
House of Representatives36034North-West (Kano, Katsina), North-East (Borno)
These results underscored the CPC's limited national penetration outside its northern base, where ethnic and religious factors amplified its appeal, but fell short of displacing PDP dominance overall.

Legacy and Influence

Role in Ending PDP Dominance

The Congress for Progressive Change (CPC) played a pivotal role in challenging the People's Democratic Party's () unchallenged hold on power, which had persisted since Nigeria's return to in 1999, by demonstrating organized opposition strength in the 2011 elections and subsequently merging into a broader . In the 2011 , CPC candidate secured approximately 12.18 million votes, or 31.7% of the total, finishing second to PDP incumbent Goodluck Jonathan's 22.50 million votes (58.9%), marking the strongest showing by any non-PDP candidate since 1999 and eroding PDP's aura of invincibility. This performance highlighted CPC's mobilization of northern and anti-corruption sentiments, pressuring PDP's national dominance and incentivizing further opposition unity. CPC's merger into the (APC) in February 2013 was instrumental in consolidating fragmented opposition forces, including the Action Congress of Nigeria (ACN) and (ANPP), to form a viable alternative capable of defeating PDP's resource advantages and incumbency networks. By dissolving its identity into APC and endorsing Buhari as the unified presidential flagbearer, CPC contributed its substantial voter base and organizational infrastructure from the 2011 campaign, preventing vote fragmentation that had previously benefited PDP. This strategic coalition addressed the structural barriers to opposition success, such as PDP's control over federal patronage and electoral logistics, enabling a cross-regional alliance that appealed to diverse demographics disillusioned with PDP governance. The culmination of CPC's influence occurred in the March 2015 presidential election, where APC's Buhari defeated PDP's with 15.42 million votes (53.1%) to 12.85 million (44.3%), a margin of 2.57 million votes, securing majorities in both chambers of the for the first time since 1999. This victory ended PDP's 16-year monopoly, attributed in analyses to the merger's role in unifying anti-PDP votes and leveraging Buhari's credibility from CPC's prior runs to capitalize on public frustration over security failures, corruption, and under PDP rule. Independent observers noted that without CPC's foundational opposition momentum and merger participation, PDP's entrenched advantages— including superior funding and media influence—likely would have prevailed, as evidenced by its prior wins despite similar criticisms. Thus, CPC's evolution from a standalone to a merger directly facilitated the democratic , reshaping Nigeria's political landscape toward competitive multiparty dynamics.

Post-Merger Dynamics within APC

Following the 2013 merger that birthed the (APC), the (CPC) faction initially coalesced around Muhammadu Buhari's presidential candidacy, contributing northern grassroots mobilization that propelled APC's 2015 victory over the Peoples Democratic Party (PDP). This period saw relative unity, with power-sharing arrangements allocating key roles: Buhari (CPC leader) as president, (a Tinubu ally from the Action Congress of Nigeria, ACN) as , and ministerial positions distributed across legacy parties to maintain balance. However, integration challenges emerged early, as CPC's northern-dominated structure clashed with ACN's southwestern organizational base, leading to disputes over party leadership and ticket allocations during the 2015 state elections, where some CPC loyalists accused ACN elements of marginalizing northern interests in formulas. By Buhari's second term (2019–2023), factional fault lines deepened, with CPC loyalists viewing the administration as overly influenced by southwestern interests, exemplified by probes into corruption allegations targeting northern figures while sparing others, and internal party conventions marred by protests over candidate impositions. The 2022 presidential primaries intensified rifts, as (ACN leader) secured the ticket amid boycotts and legal challenges from northern aspirants backed by CPC remnants, who argued it violated an unwritten north-south rotation pact post-Buhari's tenure; turnout was low at under 1,000 delegates in some reports, highlighting disunity. President , a Buhari protégé, withdrew under pressure, underscoring CPC's diminished leverage against Tinubu's machine. These dynamics reflected causal tensions from the merger's pragmatic origins—regional networks over ideological fusion—resulting in defections, such as those of northern governors aligning variably. Under Tinubu's presidency from 2023, CPC integration faltered further, with Buhari's July 2025 death catalyzing overt splits: some CPC stalwarts, like former Nasarawa Governor Tanko Al-Makura, reaffirmed loyalty to and Tinubu in April 2025 visits, citing shared progressive roots, while others rallied behind opposition figures like by September 2025, decrying perceived abandonment of northern priorities in economic reforms and security appointments. This bifurcation, with CPC blocs numbering influential northern politicians and youth wings, has fueled speculation of pre-2027 defections, as evidenced by public statements from over 20 CPC-linked groups in mid-2025, potentially eroding 's northern base that CPC once anchored. Despite affirmations from figures like Waziri Bulama that "there is no CPC anymore, is what matters," persistent factionalism underscores the merger's incomplete assimilation, prioritizing elite bargaining over institutional cohesion.

Controversies and Criticisms

Allegations of Internal Factionalism

In , the Congress for Progressive Change (CPC) faced a significant internal crisis in 2011 over leadership and candidate nominations for the general elections, resulting in parallel factions and competing claims to authentic party structures. One faction, aligned with former Speaker , contested candidate lists endorsed by another group, leading to allegations of imposition and irregularities in primaries; this dispute affected senatorial districts and seats, with the Independent National Electoral Commission (INEC) initially issuing certificates of return to candidates from the rival faction. A Federal High Court ruling later reinstated 10 CPC lawmakers from the Masari-aligned faction, citing evidence of their electoral victories despite the internal schism. By October 2011, party stakeholders urged CPC presidential candidate to intervene, highlighting risks to the party's cohesion in Buhari's home state ahead of post-election activities. Similar factional tensions emerged in in 2012, where rival groups vied for recognition as the legitimate state chairman, prompting national leadership to mediate and impose a resolution to avert escalation. These disputes reflected broader challenges in candidate selection and internal , often attributed to personal ambitions and weak institutional mechanisms for primaries, as noted in analyses of Nigerian opposition parties during the period. Factionalism culminated in violent clashes in 2013, particularly in northern states, where rival CPC groups engaged in intra-party conflicts that exacerbated ethnic tensions and contributed to dozens of casualties; such incidents underscored allegations that unresolved power struggles hindered the party's organizational unity on the eve of its merger into the (). Critics, including political observers, argued these divisions diluted CPC's electoral momentum from Buhari's strong 2011 presidential showing (over 12 million votes) by fragmenting state-level mobilization and resources. Despite efforts by national executives to manage crises—such as reconciling state chapters ahead of the APC merger—these episodes fueled claims of inherent instability in CPC's structure, inherited from predecessor groups like the ().

Electoral Irregularities Claims

The Congress for Progressive Change (CPC) contested the results of the April 16, , alleging widespread and irregularities that favored incumbent President of the People's Democratic Party (PDP). CPC candidate claimed that manipulations, including ballot stuffing, voter intimidation, and discrepancies in vote collation, occurred in at least 13 states, undermining the election's integrity. These assertions were supported by CPC's internal assessments, which reported anomalies in voter registers and result transmission processes across multiple polling units. On April 20, 2011, Buhari publicly disputed the preliminary results showing Jonathan's lead, urging supporters to remain calm while committing to pursue legal remedies through the Independent National Electoral Commission (INEC) and courts. The party filed a at the Petition Tribunal on May 9, 2011, seeking to nullify Jonathan's victory on grounds of non-compliance with electoral laws and substantial non-compliance due to rigging. CPC attributed post-election violence, which resulted in over 800 deaths primarily in northern states, to perceptions of , arguing that such outcomes eroded public trust in the process. International and domestic observers, including the (NDI), acknowledged isolated instances of irregularities such as multiple voting and logistical failures but concluded that they did not systematically alter the overall outcome, crediting INEC for improvements over prior elections marred by deeper flaws. The Petition Tribunal dismissed CPC's case on September 29, 2011, citing insufficient evidence of irregularities pervasive enough to affect the results, a ruling upheld by the on December 28, 2011. Buhari maintained in a post-verdict statement that the decision perpetuated a pattern of judicial reluctance to overturn "rigged" polls, as seen in 2003 and 2007. Despite these claims, no prosecutions for specific fraud followed from CPC's allegations, highlighting ongoing challenges in Nigeria's electoral accountability mechanisms.

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