U.S. Senate Elections
2026 Senate Elections
35 seats are on the ballot and the Republicans are defending 22 of them. Assign each one in the map to see who reaches 51.
Interactive Map Projection
Click into the full map to assign seats and build your own Senate.
The competitive 2026 races
Ratings follow Sabato’s Crystal Ball. Safe seats are left out.
| Seat | Candidate | Party | Standing | Rating |
|---|---|---|---|---|
| GA |  Jon Ossoff |  Democratic | Incumbent holds the seat since 2021 | Likely |
| GA |  Mike Collins |  Republican | Challenger U.S. Representative | Likely |
| ME |  Susan Collins | Republican | Incumbent holds the seat since 1997 | Toss-Up |
| NC Open |  Roy Cooper | Democratic | Challenger Former governor | Lean |
| NC Open |  Michael Whatley | Republican | Challenger Former RNC chair | Lean |
| IA Open |  Ashley Hinson | Republican | Challenger U.S. Representative | Toss-Up |
| IA Open |  Josh Turek | Democratic | Challenger State representative | Toss-Up |
| MI Open | Abdul El-Sayed | Democratic | Challenger Former Detroit health director | Toss-Up |
| MI Open |  Mike Rogers | Republican | Challenger Former U.S. Representative | Toss-Up |
| NH Open |  Chris Pappas | Democratic | Challenger U.S. Representative | Lean |
| NH Open |  John E. Sununu | Republican | Challenger Former U.S. Senator | Lean |
| OH | Jon Husted | Republican | Incumbent holds the seat since 2025 | Toss-Up |
| OH | Sherrod Brown | Democratic | Challenger Former U.S. Senator | Toss-Up |
| AK | Dan Sullivan | Republican | Incumbent holds the seat since 2015 | Toss-Up |
| AK | Mary Peltola | Democratic | Challenger Former U.S. Representative | Toss-Up |
| KS | Roger Marshall | Republican | Incumbent holds the seat since 2021 | Likely |
| KS | Adam Hamilton | Democratic | Challenger Pastor | Likely |
A seat marked Open is one where neither candidate currently holds it. Ratings are a judgement about how safe a seat looks, not a probability, so no percentage is attached to them.
Who controls the Senate
“Which party will win the Senate in 2026?” · Polymarket, read 6 Aug 2026, 10:36 UTC.
Each party trades as its own contract rather than as a share of one pool, so the two prices are quoted independently and need not total 100%.
Why the map is lopsided
The Republicans hold 22 of the 35 seats being contested against the Democrats’ 13, so almost every competitive race is one they are defending rather than attacking. Holding all 22 keeps the Senate at 53–47; losing three of them takes it to 50–50, where the Vice President still decides.
Frequently Asked Questions
How many seats are needed to control the Senate?
51 of 100. A 50-50 Senate is controlled by the party of the Vice President, who breaks tied votes.
How many Senate seats are up in 2026?
35: the 33 regular Class 2 seats last contested in 2020, plus special elections in Florida and Ohio for the seats Marco Rubio and JD Vance left to join the administration. Republicans are defending 22 of the 35 and the Democrats 13, which is why the Republicans have more ways to lose ground than to gain it.
What do the ratings mean, and who makes them?
They describe how safe a seat looks, from Safe through Likely, Lean and Tilt to Toss-Up, and they follow Sabato’s Crystal Ball rather than being produced here. They are a judgement about a race, not a probability, which is why no percentage is attached to them.
Why is there no market percentage for each race?
Because none exists to quote. Polymarket runs a market on which party controls the Senate, shown above, but no markets on the individual 2026 Senate races. Rather than fill the gap with a number of our own, the page leaves it out.
Can I build my own Senate map?
Yes. Open the full interactive map, assign each seat, and use the Share button for a link or embed code.