The 88th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from January 3, 1963, to January 3, 1965, during the final months of the presidency of John F. Kennedy, and the first years of the presidency of his successor, Lyndon B. Johnson. The apportionment of seats in this House of Representatives was based on the 1960 United States census, and the number of members was again 435 (it had temporarily been 437 in order to seat one member each from recently admitted states of Alaska and Hawaii).
Both chambers maintained a Democratic majority - including a filibuster-proof supermajority in the Senate - and with President Kennedy, the Democrats maintained an overall federal government trifecta.
Senators are popularly elected statewide every two years, with one-third beginning new six-year terms with each Congress. Senators are ordered first by state, and then by class. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election, In this Congress, Class 1 meant their term ended with this Congress, requiring reelection in 1964; Class 2 meant their term began in the last Congress, requiring reelection in 1966; and Class 3 meant their term began in this Congress, requiring reelection in 1968.
Lists of committees and their party leaders for members of the House and Senate committees can be found through the Official Congressional Directory at the bottom of this article. The directory after the pages of terms of service lists committees of the Senate, House (Standing with Subcommittees, Select and Special) and Joint and, after that, House/Senate committee assignments. On the committees section of the House and Senate in the Official Congressional Directory, the committee's members on the first row on the left side shows the chairman of the committee and on the right side shows the ranking member of the committee.