Who's running, which races are contested, and what the primary alone will decide, all sourced directly from Delaware's own official filing records.
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All figures come directly from the Delaware Department of Elections' candidate filing records, last updated September 13, 2026 (data scraped Friday, September 11). "Contested" means more than one person from the same party is running for the same seat; "Incumbent" means someone already holding the office. Figures cover all of Delaware government, not just statewide races, including county offices like Sheriff and Recorder of Deeds.
Note: Of 175 total candidates running this cycle across every office: 105 are Democratic, 66 are Republican, and 4 are with the Independent Party of Delaware.
Note: Of 124 distinct party primaries: of the 35 contested races, 28 are Democratic primaries and 7 are Republican primaries.
Note: Of 77 distinct races where at least one Democrat or Republican filed as a candidate, regardless of whether that race is contested: in the 34 single-party races, whoever wins September's primary effectively wins the seat, since the other party doesn't have a candidate on the ballot in November. Of those 34, 22 are Democratic-only and 12 are Republican-only. Within those 34, 26 candidates are completely unopposed, no primary fight either, while the other 8 do face a primary contest.
Note: 18 of the 19 sitting officeholders who filed to run again face a primary opponent. One, Brandon Toole (New Castle County Council, District 1), is running completely unopposed, with no primary or general election challenger. Delaware's own filing data didn't flag Toole as an incumbent, an apparent gap in their records rather than ours; his current officeholder status is independently confirmed on New Castle County's own government site.