By-elections to the 7th Russian State Duma were held to fill vacancies in the State Duma between the 2016 election and the 2021 election.
The Anna Constituency is a Russian legislative constituency in Voronezh Oblast. It covers North-Western Voronezh Oblast and the city of Anna.
The Tikhoretsk Single-member Constituency (No.51) is a Russian legislative constituency in Krasnodar Krai.
The Balashov single-member constituency is a Russian legislative constituency in the Saratov Oblast.
The Chukotka constituency is a Russian legislative constituency in the Chukotka Autonomous Okrug. The constituency is the only one in Chukotka, and occupies the whole of its territory. It is also the smallest single-member constituency of the State Duma by population.
Samara constituency is a Russian legislative constituency in Samara Oblast. In its current configuration the constituency covers parts of Samara, Novokuybyshevsk and south-eastern Samara Oblast. Until 2007 the constituency was based entirely in metropolitan Samara.
The Medvedkovo Constituency (No.200) is a Russian legislative constituency in Moscow. It is based in North-Eastern Moscow.
The Preobrazhensky Constituency (No.205) is a Russian legislative constituency in Moscow. It is based in Eastern Moscow.
The Ust-Orda Buryat Constituency (No.220) was a Russian legislative constituency in Ust-Orda Buryat Autonomous Okrug in 1993-2007. In 2008 Ust-Orda Buryat AO was merged with Irkutsk Oblast, so currently territories of former Ust-Orda Buryat constituency are now parts of Irkutsk and Angarsk constituencies of Irkutsk Oblast.
The Dauria Constituency (No.44) is a Russian legislative constituency in Zabaykalsky Krai. In 1993-2007 the constituency was based in South-Eastern Chita Oblast. In 2008 Chita Oblast merged with Agin-Buryat Autonomous Okrug to form Zabaykalsky Krai, and newly-configured Dauria constituency now covers western half of Chita, Southern Zabaykalsky Krai, as well as territory of the former Agin-Buryat Autonomous Okrug.
The Oryol Constituency (No.145) is a Russian legislative constituency covering the entirety of Oryol Oblast.
The Novgorod Constituency (No.134) is a Russian legislative constituency covering the entirety of Novgorod Oblast.
The Yaroslavl Constituency (No.194) is a Russian legislative constituency in Yaroslavl Oblast. Until 2007 the constituency covered the entirety of Yaroslavl and its suburbs. Since 2016 the constituency was gerrymandered to include half of Yaroslavl and rural eastern Yaroslavl Oblast.
The Lermontovsky Constituency (No.147) is a Russian legislative constituency in Penza Oblast. The constituency covers western Penza Oblast and parts of the city of Penza.
The Serov Constituency (No.174) is a Russian legislative constituency in Sverdlovsk Oblast. The constituency covers northern Sverdlovsk Oblast.
The Ingushetia constituency (No.13) is a Russian legislative constituency covering the entirety of Ingushetia.
The Kamchatka constituency (No.45) is a Russian legislative constituency covering the entirety of Kamchatka Krai. The constituency previously occupied the whole territory of Kamchatka Oblast but after Kamchatka Oblast was merged with Koryak Autonomous Okrug in 2007 Kamchatka constituency absorbed the entirety of Koryak constituency.
The Pavlovsk constituency (No.90) is a Russian legislative constituency in Voronezh Oblast. The constituency covers rural central and southern Voronezh Oblast.
The Kineshma constituency (No.92) is a Russian legislative constituency in Ivanovo Oblast. Until 2007 the constituency covered most of Ivanovo Oblast east of Ivanovo, however, since 2016 the constituency covers northern half of Ivanovo and northern Ivanovo Oblast.
The Dzerzhinsk constituency (No.119) was a Russian legislative constituency in the Nizhny Novgorod Oblast in 1993–2007. The constituency covered western Nizhny Novgorod Oblast, including Dzerzhinsk and Pavlovo. In 2016 Nizhny Novgorod Oblast lost one of its constituencies and Dzerzhinsk constituency was partitioned between Avtozavodsky and Kanavinsky constituencies.
