About the office
The United States Senate is the upper chamber of the U.S. Congress, with 100 senators — two from each of the 50 states[3] — and the 2026 Senate elections will decide the Class 2 third of the chamber.[2] The office is established by Article I, Section 3 of the U.S. Constitution.[1]
Senators serve six-year terms, with one-third of the chamber up for election every two years.[2] The 2026 Senate elections cover roughly one-third of the seats (the Class 2 class); voters in those states will choose a senator. There is no constitutional limit on the number of terms a senator may serve.
The Constitution requires senators to be at least 30 years old, U.S. citizens for at least nine years, and residents of the state they represent.[1] Vacancies are filled either by a special election or, in most states, by a temporary appointment from the governor pending the next general election.[3]
The Senate shares legislative authority with the House of Representatives — both chambers must pass identical text before a bill can be sent to the President. The Senate also has unique constitutional roles: it confirms federal judges and senior executive-branch nominees, ratifies treaties by a two-thirds vote, and serves as the trial body in impeachment proceedings.[1]
Sources
- [1]https://constitution.congress.gov/constitution/article-1/#article-1-section-3U.S. Constitution / Congress.gov · retrieved 2026-05-23
- [2]https://www.senate.gov/about/origins-foundations/electing-appointing-senators/three-classes-of-senators.htmSenate.gov · retrieved 2026-05-23
- [3]https://www.senate.gov/senators/Senate.gov · retrieved 2026-05-23