[1] There are 83 constituencies with a district magnitude of two. Terms to the Federation Council are not nationally fixed.

[2] Proportional representation seats are allocated using the Hare quota. For these seats, there is one nationwide district and a minimum threshold of 5% (lowered from 7% on 24 February 2014).

[3] On 24 February 2014, the State Duma voted to replace the system of full proportional representation established in 2007 whereby all members were elected through closed party lists with the previous mixed system that includes direct elections to single-member constituencies. In addition, all political parties must now present 200,000 signatures to register and all independent candidates must present the signatures of at least 3% of voters in their constituency. If a party received at least 3% of votes in the previous election or if at least one party member sits in a regional legislature, the party is exempt from this requirement. Candidates are allowed to run as both individual candidates and as members of a party list.