how often do we elect senators

U.S. Senators are elected to serve six-year terms. However, the elections are staggered so that approximately one-third of the Senate seats are up for election every two years. This means that every two years, during both midterm and presidential election years, about one-third of the Senate is elected. This staggered election system ensures continuity and stability in the Senate, as it prevents the entire chamber from being replaced at once. The system is established by Article I, Section 3 of the U.S. Constitution and was implemented to provide experienced legislators at any given time.