Then, the membership of the House temporarily increased to 437 (seating one member from each of those newly admitted states and leaving the apportionment of the other 435 seats unchanged); it would remain at 437 until reapportionment resulting from the 1960 census.

The Democrats maintained full control of Congress, with greatly increased majorities in both chambers.

The increase over the usual 435 members was due to the admission of Alaska and Hawaii, whose seats were temporary until reapportionment following the 1960 Census.

Senators are popularly elected statewide every two years, with one-third beginning new six-year terms with each Congress.

The names of members of the House of Representatives are preceded by their district numbers.