2025 Kostroma Oblast legislative election

2025 Kostroma Oblast legislative election

12–14 September 2025
All 35 seats in the Oblast Duma 18 seats needed for a majority
Majority party Minority party Third party   UR CPRF LDPR Candidate Aleksey Anokhin Valery Izhitsky Ruslan Fedorov Party United Russia CPRF LDPR Last election 31.92%, 24 seats 17.23%, 2 seats 12.11%, 1 seat   Fourth party Fifth party Sixth party   RPPSS NL Candidate Alexey Chepa Yury Shestakov Maria Bazhenova Party SR–ZP Party of Pensioners New People Last election 9.16%, 2 seats 8.34%, 1 seat 7.46%, 1 seat   Seventh party Eighth party   CPCR PSZ Candidate Sergey Malinkovich Vladimir Mikhaylov Party Communists of Russia Party of Social Protection Last election 3.01%, 0 seats Failed to qualify
Chairman before election Aleksey Anokhin United Russia Elected Chairman TBD TBD

The 2025 Kostroma Oblast Duma election will take place on 12–14 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]

• United Russia
• Communist Party of the Russian Federation
• Liberal Democratic Party of Russia
• A Just Russia — Patriots — For Truth
• New People
• Russian Party of Pensioners for Social Justice
• Communists of Russia

Yabloko, which participated in the last election, did not file, while For Truth has been dissolved since.

Party of Social Protection, led by Kostroma Oblast Duma member and businessman Vladimir Mikhaylov, was initially denied document filing by the Electoral Commission of Kostroma Oblast due to irregularities at the party conference.^[3] The party was able to hold another conference and file the documents again four days later,^[4] however, this time the party failed to qualify after the electoral commission ruled the party had United Russia members as conference participants.^[5] On August 5 Kostroma Oblast Court ruled in favour of the party and obliged the electoral commission to register Party of Social Protection list,^[6] however, party candidates in single-mandate constituencies were not reinstated.^[7]

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]

Summary of the 12–14 September 2025 Kostroma Oblast Duma election results

Party		Party list					Constituency		Total
		Votes	%	±pp	Seats	+/–	Seats	+/–	Seats	+/–
	United Russia			TBD		TBD		TBD		TBD
	Communist Party			TBD		TBD		TBD		TBD
	Liberal Democratic Party			TBD		TBD		TBD		TBD
	A Just Russia — For Truth			TBD		TBD		TBD		TBD
	Party of Pensioners			TBD		TBD		TBD		TBD
	New People			TBD		TBD		TBD		TBD
	Communists of Russia			TBD		TBD	–	–		TBD
	Party of Social Protection			TBD		TBD	–	–		TBD
Invalid ballots				TBD	—	—	—	—	—	—
Total			100.00	—	10		25		35
Turnout				TBD	—	—	—	—	—	—
Registered voters			100.00	—	—	—	—	—	—	—
Source:

• 2025 Russian regional elections