The U.S. Senate
Each state has an equal voice: two senators representing everyone in the state.
New to this? Start with these words.
- Senator
- A member of the Senate. Each state has two U.S. senators.
- Seat
- A position held by one member at a time.
- Majority
- More than half of the group being counted. The group depends on the question.
Learn at your own pace. Browse the plain-language glossary →
Who holds the seats?
Republican majority · 53 of 100 filled seats
100 seats shown. Select a label to highlight a group.
The two independents caucus with Democrats for organization, making a 47-member Democratic caucus. They remain separately identified as independents here.
A schematic of party totals, not actual desk locations or a prediction of how members will vote. Independents are gold; vacant seats are gray with dashed outlines. This is a dated snapshot, not a live results feed.
One chamber of Congress.
The Senate works with the House to make federal laws. It also votes on many presidential nominations, considers treaties, and holds impeachment trials.
What does an individual U.S. senator do? →
Why are there Senate elections every two years?
The seats are divided into three election groups, called classes. Roughly one-third are scheduled for election every two years. Each individual seat normally comes up every six years.
Special elections can occur outside a seat’s regular cycle.
Explore a state
Choose a state →
Find its senators and representatives, compare their seats, and explore the offices they hold.
For every state, use the official Senate directory ↗.
Explore every Senate seat.
Choose a state, then a seat, then its officeholder. Current representation is separate from candidacy.
- The U.S. Senate · U.S. Capitol Visitor Center
- Senate powers and procedures · U.S. Senate
- Qualifications and terms of service · U.S. Senate
- Class II: terms expire in 2027 · U.S. Senate
- Class III: terms expire in 2029 · U.S. Senate
- Current senators and party division · U.S. Senate
- Senate facts and independent caucus affiliation · U.S. Senate Daily Press
Reviewed October 19, 2026. How this guide is researched.