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Delaware voters will participate in the 2026 midterm primary elections on September 15, 2026, with the general election date to be announced. This cycle features competitive primaries for significant offices, including both Democratic and Republican primary contests for the U.S. Senate seat, along with a Democratic primary for the state treasurer position.
As the First State, Delaware maintains its tradition of September primaries, later than most states in the nation. With three races currently on the ballot, voters will help determine party nominees for federal representation and state-level fiscal leadership. Delaware's small size and single at-large congressional district create an intimate political environment where candidates often engage directly with voters throughout the state's three counties; New Castle, Kent, and Sussex.
Delaware voters must be U.S. citizens, at least 18 years old by Election Day, and residents of Delaware. Voter registration is available online, by mail, or in person at the Department of Elections or Division of Motor Vehicles offices. Delaware maintains closed primaries, meaning voters may only participate in the primary of the party with which they are registered.
The state offers in-person early voting at designated locations in each county, typically beginning 10 days before Election Day. Delaware does not require an excuse for absentee voting by mail—any registered voter may request an absentee ballot. On Election Day, voters must present identification at the polls, though Delaware accepts various forms including non-photo ID. Polling places are assigned based on your residential address and can be found through the state's voter portal.
Get updates when new races launch and results come in.