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 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.
The Nizhny Novgorod Constituency is a Russian legislative constituency in Nizhny Novgorod Oblast.
The Medvedkovo Constituency (No.200) is a Russian legislative constituency in Moscow. It is based in North-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 Agin-Buryat Constituency (No.215) was a Russian legislative constituency in Agin-Buryat Autonomous Okrug in 1993-2007. In 2008 Agin-Buryat AO was merged with Chita Oblast to form Zabaykalsky Krai. As of today, the territory of the former Agin-Buryat constituency is part of the Dauria constituency.
The Amur Constituency (No.71) is a Russian legislative constituency in Amur Oblast. The constituency is the only one in Amur Oblast, and occupies the whole of its territory.
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 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 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 Prioksky constituency is a Russian legislative constituency in Nizhny Novgorod Oblast. Until 2007 it covered southwestern Nizhny Novgorod Oblast, including Arzamas, Sarov and Vyksa. In 2016 most of former Arzamassky constituency was placed into Prioksky constituency, which was stretched to the Prioksky District of Nizhny Novgorod, however, the constituency lost its western part.
The Avtozavodsky constituency (No.131) is a Russian legislative constituency in Nizhny Novgorod Oblast. Until 2007 the constituency covered Avtozavodsky, Leninsky and Sovetsky City Districts of Nizhny Novgorod. In 2016 Avtozavodsky constituency only retained Avtozavodsky City District but it took Pavlovo from former Dzerzhinsk constituency and Vyksa from former Arzamas constituency.
The Kanavinsky constituency (No.132) is a Russian legislative constituency in Nizhny Novgorod Oblast. Until 2007 the constituency covered Kanavinsky, Moskovsky, Nizhegorodsky and Sormovsky City Districts of Nizhny Novgorod. In 2016 Kanavinsky constituency was stretched to the west to take parts of the dismantled Dzerzhinsk constituency.
The Bor constituency (No.133) is a Russian legislative constituency in Nizhny Novgorod Oblast. It covers northern Nizhny Novgorod Oblast.
