The United States Senate, which is the upper chamber of Congress, consists of 100 senators in total. Each of the 50 states is represented by two senators, regardless of the state's population size. Senators serve staggered six-year terms, with about one-third of the Senate up for re-election every two years. This composition remains consistent as of the 119th Congress for 2025-2027, with 100 total Senate seats.
