Aleksey Anokhin United Russia
TBD TBD
The 2025 Kostroma Oblast Duma election will take place on 14 September 2025, on common election day, coinciding with 2025 Kostroma Oblast gubernatorial election. All 35 seats in the Oblast Duma are up for re-election.
Under current election laws, the Oblast Duma is elected for a term of five years, with parallel voting. 10 seats are elected by party-list proportional representation with a 5% electoral threshold, with the other half elected in 25 single-member constituencies by first-past-the-post voting. Seats in the proportional part are allocated using the Imperiali quota, modified to ensure that every party list, which passes the threshold, receives at least one mandate.[1]
To register regional lists of candidates, parties need to collect 0.5% of signatures of all registered voters in Kostroma Oblast.
The following parties were relieved from the necessity to collect signatures:[2]
25 single-mandate constituencies were formed in Kostroma Oblast. To register candidates in single-mandate constituencies need to collect 3% of signatures of registered voters in the constituency.[1]