The apportionment of seats in the House of Representatives was based on the 1840 United States census.
It was one of the least active Congresses, forwarding only 74 bills that were signed by the president.
Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress.
Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election.
The names of members of the House of Representatives are preceded by their district numbers.
House seats by party holding plurality in state | |
---|---|
80+ to 100% Democratic
|
Up to 60% Whig
|
60+ to 80% Democratic
|
60+ to 80% Whig
|
Up to 60% Democratic
|
80+ to 100% Whig
|
60+ to 80% Union
|