United States Senate elections, 1866 and 1867

Dates vary by state
(And other dates for special elections)

25 of the 72 seats in the United States Senate (with special elections)
27 seats needed for a majority

	Majority party	Minority party

Party	Republican	Democratic
Last election	33 seats	9 seats
Seats before	37	10
Seats won	15	2
Seats after	39	10
Seat change	2
Seats up	13	2

	Third party	Fourth party

Party	Unionist	Unconditional Unionist
Last election	2 seats	4 seats
Seats before	3	2
Seats won	0	0
Seats after	2	1
Seat change	1	1
Seats up	1	1

Majority Party before election

Republican Party

Elected Majority Party

Republican Party

The United States Senate elections of 1866 and 1867 were elections that saw the Republican Party gain two seats in the United States Senate as several of the Southern States were readmitted during Reconstruction, enlarging their majority.

As these elections were prior to ratification of the seventeenth amendment, Senators were chosen by state legislatures.

Senate Party Division, 40th Congress (1867–1869)

After August 31, 1866 appointment in New Hampshire.

In these special elections, the winners were seated during 1866 or in 1867 before March 4; ordered by election date.

In these general elections, the winners were elected for the term beginning March 4, 1867; ordered by state.

All of the elections involved the Class 3 seats.

The New York election was held on January 15, 1867, by the New York State Legislature. Republican Ira Harris had been elected in February 1861 to this seat, and his term would expire on March 3, 1867.

At the State election in November 1865, 27 Republicans and 5 Democrats were elected for a two-year term (1866-1867) in the State Senate. At the State election in November 1866, 82 Republicans and 46 Democrats were elected for the session of 1867 to the Assembly. The 90th State Legislature met from January 1 to April 20, 1867, at Albany, New York.

The caucus of Republican State legislators met on January 10, State Senator Charles J. Folger presided. State Senator Thomas Parsons (28th D.) was absent, but had his vote cast by proxy. They nominated Congressman Roscoe Conkling for the U.S. Senate. The incumbent Senator Ira Harris was voted down.

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Wikipedia