With the 2026 primaries fast approaching, there are three U.S. Senate seats onlookers should keep an eye on.

Republicans are currently enjoying a supermajority after sweeping the 2024 elections, controlling the White House, the House of Representatives, and the Senate.

The freshman senator narrowly won his seat in 2020 by just one point.

After November, Republicans flipped four seats: Ohio, West Virginia, Pennsylvania, and Montana. These victories flipped the Senate and put Republicans in a comfortable 53-seat majority while Democrats fell back to just 47 seats.

Although the GOP has a healthy majority, there are some more potential pick-up opportunities — and losses — for Republicans going into next year's primaries.

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