What Is Actually at Stake in Congress?

The brief

All 435 House seats are contested in the regular 2026 election. Senators serve staggered six-year terms. This cycle has 33 regular Senate elections and two special elections, for 35 contests. [3] Election Day is November 3. [1][2]

Why the maps differ

House races are decided district by district; Senate races are statewide. A national polling lead cannot be translated directly into seats. The Senate seats being contested this year are only part of the chamber, so the two parties face different opportunities. [1][2]

How to follow the battle

Daymark’s approach: distinguish certified candidates, polling and race ratings from results. For a particular race, compare the candidates’ positions and records, the relevant electorate and the dates of any surveys. We are not assigning winners or publishing an election forecast here.

What happens next

The people elected in November will serve in the next Congress. Our coverage will follow the contest for representation and the policy choices candidates promise—not just a national scoreboard. [2]

Sources & update record

1. USAGov · Congressional elections
2. Ballotpedia · 2026 congressional elections
3. Ballotpedia · 2026 Senate elections

September 7, 2026 — Published this sourced summary. Dates within the story identify the underlying report or event. No original interviews were conducted for this edition.