Bosnia and Herzegovina goes to the polls Sunday with 3.4 million eligible voters navigating one of the most deliberately complex governance architectures on Earth. The 1995 Dayton Peace Accords created a system split between two semi-autonomous entities — the Muslim-Croat Federation and the Serb-run Republika Srpska — plus a neutral Brcko district, a weak central government, multiple cantons, a tripartite presidency, and layered parliaments. Citizens are electing across all of these tiers simultaneously. The dominant dynamic remains unchanged: ethnonationalist parties — the Bosniak SDA, Serb SNSD, and Croat HDZ BiH — draw power from the very ethnic divisions the system was meant to manage. They are pitted against multi-ethnic opposition coalitions led by the Social Democratic Party, but the structural incentives favor fragmentation. Each entity's dominant party can stall the weak central government at will, and they do. The shadow over Republika Srpska is Milorad Dodik, who remains the key figure despite being barred from public office for six years after conviction for defying the Office of the High Representative. Dodik just returned from Moscow after meeting Vladimir Putin and told supporters at a Banja Luka rally that "Bosnia and Herzegovina is dead, it is an impossible country." His proxy, Savo Minic, is running for the Republika Srpska presidency. In the Federation, Bosniak parties advocate for a stronger central state and resistance to Serb separatism. Incumbent Bosniak presidency member Denis Becirovic has pledged a renewed push toward EU and NATO membership. Bosnian Croats largely back their ethnic parties, including the Bosnian branch of Croatia's ruling HDZ. The demographic breakdown — roughly 50% Muslim Bosniak, 31% Orthodox Serb, 15% Catholic Croat — maps almost perfectly onto the party system. Bosnia has held EU candidate status since 2022, but actual accession talks require judicial reform, anti-corruption legislation, and institutional strengthening that the current system structurally resists. Every reform that would centralize governance threatens the power base of at least one ethnonationalist party, creating a permanent veto loop. The country has been peaceful in recent years, but that peace is maintained by a system that also prevents functional governance. Voters consistently say they want to move past war-era rhetoric and division, yet the Dayton architecture channels their votes through ethnic categories that reproduce exactly that division. The structure does not fail — it succeeds at the wrong thing. Polls close at 7 p.m. local time (1700 GMT), with preliminary results expected late Sunday. Whatever the outcome, the deeper question is whether a governance framework designed to end a war in 1995 can ever produce the institutional capacity needed for EU membership in 2025 and beyond.