How often are elections held for U.S. Senators?

U.S. Senators serve six-year terms, and elections for Senate seats are held every six years. However, not all Senate seats are contested in the same year. The Senate is divided into three classes, with approximately one-third of the 100 Senate seats up for election every two years. This staggered election cycle ensures continuity within the Senate while also allowing for regular voter input regarding their representation. This structure of six-year terms for Senators helps to maintain a balance of experience and accountability within the legislative body, as Senators can take on long-term projects and policies without the immediate pressure of annual election cycles.