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, specifically in Article I, Section 3, which outlines the structure of the Senate. Senators serve longer terms compared to members of the House of Representatives, who serve two-year terms. The six-year term allows Senators to engage in long-term policy-making and to be somewhat insulated from the immediate pressures of public opinion that can affect shorter-term elected officials. Additionally, the staggered nature of Senate elections means that approximately one-third of the Senate is up for reelection every two years, which contributes to continuity and stability within the legislative branch.