The 2026 Senate battlefield continues to expand

States with competitive Senate seats in the 2026 midterms, as well as whether that seat has an incumbent, Daily Kos' rating for that race, and the average result in recent statewide elections, as of Sept. 1, 2026

Statewide elections used in the average include the 2016, 2020, and 2024 presidential elections, as well as the state's most recent Senate election and gubernatorial election. Special elections are excluded. For states with ranked choice voting, the most recent election with a Republican and a Democrat in the final round of voting is used.
Chart: Andrew ManganSource: Daily Kos; Dave Leip's Atlas of U.S. Elections