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

A U.S. Senator is elected for a term of six years. This is established in Article I, Section 3 of the United States Constitution. Senators serve longer terms than members of the House of Representatives, who serve two-year terms. The six-year term allows Senators more time to focus on long-term legislative goals and the needs of their states without the frequent campaigning that shorter terms might necessitate. Additionally, the staggered election system means that approximately one-third of the Senate is up for re-election every two years, ensuring continuity within the Senate while also allowing for periodic changes in its membership. This structure is designed to balance the desire for both stability and accountability in the legislative branch of government.