1812–13 United States Senate elections

The 1812–13 United States Senate elections were held on various dates in various states, coinciding with President James Madison's re-election. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1812 and 1813, and a seat may have been filled months late or remained vacant due to legislative deadlock. In these elections, terms were up for the senators in Class 3.

The Democratic-Republican Party lost two seats but still retained an overwhelming Senate majority. As in recent elections, the minority Federalists had gone into the elections with such a small share of Senate seats (6 out of 36, or 16.7%) that if they had won every one of the elections, they would still not have controlled a majority.

Before the elections
Composition after September 1812 elections in the new state of Louisiana.

Special elections during the 12th Congress
In these special elections, the winners were seated during 1812 or before March 4, 1813; ordered by election date.

Races leading to the 13th Congress
In these regular elections, the winner was seated on March 4, 1813 (except where noted due to late election); ordered by state.

All of the elections involved the Class 3 seats.

Special elections during the 13th Congress
In these special elections, the winners were seated in 1813 after March 4; ordered by election date.

Maryland (regular)
The Maryland legislature failed to elect a senator before the March 3, 1813, the beginning of the term. Robert Henry Goldsborough was appointed to fill the seat.

Maryland (special)
Robert H. Goldsborough won election over Edward Lloyd by a margin of 20.45%, or 18 votes, for the Class 3 seat.