Atiku's 2019 performance (41.2%) remains his high watermark — and it came closest to defeating an incumbent. His 2023 collapse to 21.4% was caused by the Obidient split pulling urban southern and middle belt votes to Peter Obi. The trend line through his actual runs (2007 → 2019 → 2023) shows a peak-and-decline arc, not growth. His 2027 leverage is not his own vote ceiling — it is his capacity to either enable or wreck an opposition coalition.
Peter Obi won 25.4% nationally in 2023 — 6.1M votes. He swept the South East and South South, and performed strongly in urban centres nationwide. The Obidient movement was the defining youth-driven political phenomenon of the 2023 election. His refusal to consolidate within PDP, instead running LP, caused the three-way split that Tinubu exploited. In 2027 his relevance depends entirely on whether he joins an ADC coalition or runs independently again.
Kwankwaso won 1.5% nationally but 59.5% in Kano — the most lopsided state-level performance of any candidate in the 2023 election. His Kankwasiyya political machine is the strongest sub-national network in Nigeria. Outside Kano, his NNPP had limited reach. In a consolidation scenario his contribution is decisive: Kano is the most populous state in Nigeria (4.7M registered voters), and a near-total Kwankwaso transfer in Kano alone swings the state definitively. His leverage in coalition negotiations is therefore disproportionate to his national vote share.
Tinubu won the 2023 election with 37.5% — a plurality in a three-way race. His strategy was to win with a base that could not be assembled into a single majority. The South West delivered his strongest margins, but his national performance was geographically uneven: he lost 26 of 37 states on combined opposition math. In 2027 he is the incumbent with full state machinery, federal patronage, and APC governor networks covering the majority of states. His vulnerability is economic: the subsidy removal and naira devaluation have generated severe cost-of-living pressure across all demographics.