Vučić’s “United Serbia” list leads Serbia’s October 25 parliamentary contest after the longtime president resigned in September to seek the prime minister post amid ongoing student protests and early elections called in response to political turbulence. Traders price the Vučić-Iotova pairing highest because Iotova, the acting Bulgarian president backed by the governing Progressive Bulgaria camp, holds a commanding lead in her concurrent presidential race against challenger Andrey Gyurov. Lower-priced alternatives such as Srdanović-Iotova or Vučić-Gyurov reflect the narrower Serbian contest and the limited upside for opposition tickets in Bulgaria, where polls show Iotova near or above 45 percent and a runoff widely expected. Recent campaign developments, including candidate registrations and platform positioning on foreign policy and governance, have reinforced these relative probabilities in the week before voting.