how many republican senators are up for re-election in 2026

There are 20 Republican senators up for regular re-election in 2026, based on the Senate class breakdown for that cycle. The full 2026 Senate ballot includes 33 regular seats, with 20 held by Republicans and 13 by Democrats.

Quick Scoop

• Republicans: 20 seats up for re-election in 2026.

• Democrats: 13 seats up for re-election in 2026.

• Total regular Senate seats: 33.

Note

Some sources discuss 35 total Senate contests in 2026 when including special elections, but the standard regular-election count for Republicans is still 20.

TL;DR: 20 Republican senators are on the 2026 re-election ballot.