For how many years is a U.S. Senator elected?

A U.S. Senator is elected for a term of six years. This duration is established by the U.S. Constitution, which mandates that each Senator serves a six-year term to ensure a stable legislative body. Senators can be re-elected for additional terms; thus, they may serve for many years as long as they continue to win the support of their constituents. This longer term compared to other elected officials, such as members of the House of Representatives who serve two-year terms, allows Senators to engage in more long-term legislative planning and work. The six-year term was designed to provide a mix of continuity and accountability in the U.S. Senate.