Members are informally grouped into factions of similar interest, based on an analysis of their voting record.

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.

All representatives were elected statewide on a general ticket.