Guinea-Bissau’s December 6, 2026 presidential election, set under a military-led transitional charter after the November 2025 coup that ousted incumbent Umaro Sissoco Embaló, features a fragmented field that keeps implied probabilities for the top contenders tightly clustered. Exclusion of major parties such as the PAIGC, the transitional bar on junta figures running, and pressure from ECOWAS and the African Union for an inclusive process have produced a crowded ballot with more than a dozen candidates, diluting support and limiting any single frontrunner’s advantage. Recent regional mediation and calls for detainee releases and institutional reforms underscore the fluid security and political environment, where shifts in alliances, candidate withdrawals, or renewed instability could quickly alter the balance among leading names such as Embaló and Fernando Dias da Costa.