Until 2023 the number of mandates allocated in proportional and majoritarian parts were standing at 24 each.

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.

The following parties were relieved from the necessity to collect signatures:[2] New People, Communists of Russia and The Greens will take part in Smolensk Oblast legislative election for the first time.

32 single-mandate constituencies were formed in Smolensk Oblast, an increase of 8 seats since last redistricting in 2018.

Igor Lyakhov (United Russia) was re-elected as Chairman of the Oblast Duma,[4] while Oblast Duma member Artyom Malashchenkov (United Russia) was appointed to the Federation Council, replacing incumbent Senator Irina Kozhanova (LDPR).