Delaware election officials are reminding voters about an important upcoming deadline for the state’s September primary election.
The Delaware Department of Elections announced that voters who wish to change their party registration must do so by Friday, May 29, 2026 at 11:59 p.m. This deadline applies to those wanting to participate in the September 15, 2026 Primary Election.
The deadline is established under Delaware law, specifically 15 Del. C. § 2049(a). Delaware operates as a Closed Primary State, which means voters can only cast ballots in primary elections if they are registered with either the Democratic or Republican party.
