Washington, D.C.'s primary is set for Tuesday, June 16, 2026, and the clock is already ticking for anyone who wants a say in the mayoral, council and other local races. If you plan to vote in the primary, you must either have your voter registration received by Tuesday, May 26, 2026, or register in person during early voting or on Election Day with acceptable proof of D.C. residency.
Key dates to mark
Primary Election Day is Tuesday, June 16, 2026. Online and mail voter registration applications must be received by Tuesday, May 26, which is 21 days before the primary, and that same date is the cutoff to change party affiliation if you want to vote in a party primary. According to U.S. Vote Foundation, those are the official calendar dates, so mark them before they sneak up on you.
Mail ballots, early voting and drop boxes
All active registered D.C. voters will be mailed a ballot, but if you expect to be away you must specifically request a mail ballot, and that request has to be received no later than the 15th day before the election, Monday, June 1, 2026. The Board plans to begin mailing ballots in mid‑May and tentatively open drop boxes in late May, and early voting runs Monday, June 8 through Sunday, June 14. Per the D.C. Board of Elections, ballots must be postmarked or otherwise shown as sent by Election Day and received within 10 days after the election to be counted.
Who can vote in the primary
To vote in the D.C. primary, you must be registered with one of the parties conducting a primary, Democrat, Republican or D.C. Statehood Green, on or before the 21‑day cutoff, unless you are registering for the first time when you vote. Registered independents cannot cast a party primary ballot unless they change affiliation by the May 26 deadline or register in person at an early vote center or on Election Day with proof of residency. The ACLU of D.C.'s voter guide summarizes these rules and lists acceptable residency documents for same‑day registration, as outlined by ACLU of D.C..
How to register and where to get help
You can register online, download a mail‑in form or submit your application in person, and online and mailed forms must be received by the Board by May 26 to count before the primary. If you miss that deadline, you can still register and vote at any early vote center during the early voting period or at vote centers on Election Day, as long as you bring proof of D.C. residency. As outlined by D.C. Board of Elections, the Board also accepts registrations by fax or email and provides a voter‑status lookup tool, so you can double‑check that everything is in order.
More resources
For a short local explainer, FOX 5 DC published a quick primer on the registration timeline and what to do if you are cutting it close to the deadlines, as reported by FOX 5 DC. If you still have questions, contact the Board of Elections at 1‑866‑DC‑VOTES or use the Board's online portals to check your status and track a mailed ballot.
