DOVER, DE – Delaware election officials have announced the cutoff date for voters who want to switch their party affiliation before the upcoming 2026 primary contest.
The Delaware Department of Elections (DOE) has established Friday, May 29, 2026 at 11:59 p.m. as the final opportunity for registered voters to change their party registration ahead of the September 15, 2026 Primary Election. This deadline is established under Delaware law, specifically 15 Del. C. § 2049(a).
The First State operates under a closed primary system, which requires voters to be affiliated with either the Democratic or Republican party to cast ballots in primary elections.
