Sofia leads the Eurovision 2027 host city market at an 85.5% implied probability because its capital status, international airport, and 18,000-capacity Arena Sofia give it decisive advantages in infrastructure and organizational capacity. The Bulgarian National Television (BNT) opened the official bidding process after Dara’s 2026 victory, and recent meetings with all four contenders underscored Sofia’s edge in meeting EBU venue and logistics requirements without major upgrades. Burgas, Varna, and Plovdiv trail as their arenas fall short or require expansion, though Burgas’s newer facility keeps it as the clearest secondary option at 8.0%. The final decision, expected by the end of July, remains the key catalyst that could lock in or shift the current trader consensus.