Midterm Election Races to Watch

Know where your postcards can make the biggest difference.

The 2026 midterm elections — happening November 3, 2026 — will determine control of both the U.S. House and Senate. All 435 House seats and 33 Senate seats are on the ballot, with key 2026 Senate battlegrounds in Maine, Georgia, Ohio, Michigan and North Carolina drawing national attention.

For volunteers doing voter outreach in 2026, knowing which races are most competitive helps you focus your postcards to voters where they'll have the most impact. Use this guide to track 2026 primary dates, competitive districts and election deadlines.

Read our full postcard writer volunteer guide →

2026 Midterm Election: November 3, 2026

Every seat in the U.S. House and 33 Senate seats are on the ballot. All 435 House seats are competitive in the sense that they all need voters to show up. That's a lot of postcards to write — and we're here to help you write them.

Election dates and details can change. Always confirm with your state's Secretary of State office before planning your outreach.

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FAQs

The 2026 midterm elections will be held on Tuesday, November 3, 2026. All 435 U.S. House seats and 33 Senate seats are on the ballot.
Key Senate battlegrounds include Maine, Georgia, Ohio, Michigan, North Carolina and Alaska — races that could determine which party controls the Senate.
Primaries begin in May 2026 and run through September. See the full schedule above, or view all primary dates at FEC.gov.
Writing postcards to voters is one of the most effective outreach tools for volunteers. Shop our postcard bundles to get started.