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 Nizhny Novgorod Constituency is a Russian legislative constituency in Nizhny Novgorod Oblast.
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 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 Kaliningrad Constituency (No.97) is a Russian legislative constituency in Kaliningrad Oblast. Until 2007 Kaliningrad Oblast had a single constituency but its received a second one in 2016 redistricting. Since 2016 Kaliningrad constituency covers parts of Kaliningrad and northern Kaliningrad Oblast.
The Novgorod Constituency (No.134) is a Russian legislative constituency covering the entirety of Novgorod Oblast.
The Kursk Constituency (No.109) is a Russian legislative constituency in the Kursk Oblast. In 1993-2007 the constituency covered Eastern Kursk Oblast, the cities of Kursk and Shchigry, but in 2016 Lgov constituency in Western Kursk Oblast was extended to Kursk and gained the name "Kursk constituency", while the territory of former Kursk constituency was placed into Seimsky constituency.
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.
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.
The Obninsk constituency (No.99) is a Russian legislative constituency in Kaluga Oblast. Until 2007 the constituency covered western Kaluga Oblast. However, in 2016 the constituency changed significantly as it switched near all of its territory with Kaluga constituency, so currently Obninsk constituency is based in eastern Kaluga Oblast.
The Kotlas constituency (No.73) is a Russian legislative constituency in Arkhangelsk Oblast. In 1993-2007 the constituency covered upstate southern Arkhangelsk Oblast, however, in 2016 the constituency was changed: it took parts of Arkhangelsk and traded several districts in western Arkhangelsk Oblast with Arkhangelsk constituency for some territories in the north.
The Radishchevo constituency (No.188) is a Russian legislative constituency in Ulyanovsk Oblast. In 1995-2007 the constituency covered upstate Ulyanovsk Oblast, however, in 2016 the constituency took parts of Ulyanovsk from Ulyanovsk constituency.
The Buguruslan constituency (No.143) is a Russian legislative constituency in Orenburg Oblast. Until 2007 the constituency covered western Orenburg Oblast; however, in 2016 the constituency took parts of Orenburg and was reconfigured to northwestern Orenburg Oblast.
The Orsk constituency (No.144) is a Russian legislative constituency in Orenburg Oblast. The constituency covers eastern Orenburg Oblast.
The Iskitim constituency (No.137) is a Russian legislative constituency in Novosibirsk Oblast. Until 2007, the constituency covered suburban and rural territories around Novosibirsk in eastern Novosibirsk Oblast. However, in 2015 the constituency was heavily gerrymandered: it currently takes parts of Novosibirsk itself and stretches alongside oblast's southern border as far as Bagan in the west.
The Nizhny Tagil constituency (No.171) is a Russian legislative constituency in Sverdlovsk Oblast. The constituency covers central Sverdlovsk Oblast and anchors in the industrial city of Nizhny Tagil.
The Zlatoust constituency (No.193) is a Russian legislative constituency in Chelyabinsk Oblast. The constituency covers historical Mountain-Industrial Zone in northwestern Chelyabinsk Oblast.
The Chelyabinsk constituency (No.189) is a Russian legislative constituency in Chelyabinsk Oblast. Until 2007 the constituency covered urban Chelyabinsk, however, after 2015 redistricting it was stretched to central Chelyabinsk Oblast.
