36th District Republican Primary Approaches; May 29 Deadline Looms for Voters Seeking to Participate

Delaware election officials are reminding voters that Friday, May 29, is the deadline to change political party affiliation ahead of the Sept. 15, 2026 primary election.

Closed Primary Rules Mean Only Republicans Can Vote in the Primary. If you are a Democrat or Independent, you must change by May 29 to vote in the September Rematch.

GEORGETOWN — Voters interested in participating in one of Delaware’s most closely watched legislative races this year are running out of time to ensure they can cast a ballot in the Republican primary for the 36th Representative District.

Delaware election officials are reminding voters that Friday, May 29, is the deadline to change political party affiliation ahead of the Sept. 15, 2026 primary election.

Because Delaware operates under a closed primary system, only voters registered with the Republican Party may vote in the Republican primary, while only registered Democrats may vote in Democratic primaries.

A Rematch Voters Should Remember

This year’s Republican primary in the 36th District is drawing significant attention because it is a rematch of one of the closest legislative races in Delaware history.

Incumbent State Rep. Bryan Shupe will once again face challenger Patrick Smith, who challenged Shupe in 2024.

Two years ago, Shupe survived the Republican primary by just 12 votes, underscoring the importance of voter participation in low-turnout elections. The razor-thin margin became one of the most talked-about legislative races in Sussex County and demonstrated that every vote truly can make a difference.

With the two candidates preparing for a rematch this September, political observers expect another highly competitive contest in a district that has long been considered a Republican stronghold.

Why the May 29 Deadline Matters

The narrow outcome of the previous primary serves as a reminder that participation begins long before Election Day. Because Delaware’s primary system is closed, voters who wish to have a say in selecting the Republican nominee must be registered Republicans by the May 29 deadline.

Under Delaware law, voters who are currently registered as Democrats, Independents, or members of another political party must change their affiliation to Republican by May 29 if they wish to vote in the Republican primary.

The same deadline applies to Republicans who may wish to participate in a Democratic primary by changing their affiliation to Democratic.

Voters may update their party registration online through Delaware’s voter registration system or by submitting an updated voter registration form through the Department of Elections.

Election officials note that new voters registering for the first time may choose a party affiliation when they register. Existing voters seeking to change affiliation must complete the process before the May 29 deadline.

Every Vote Counts in the 36th District

The Sept. 15 primary election will determine each party’s nominee for the Nov. 3 general election.

For voters in the 36th District, the stakes are especially clear. In a race where the last primary was decided by only 12 votes, even a handful of voters can determine who represents the district in Dover.

Political strategists often point to the 2024 Shupe-Smith contest as an example of how local elections can hinge on turnout. A dozen voters changing their minds — or simply showing up at the polls — could have produced a different outcome.

As the rematch approaches, voters who want a voice in selecting the Republican nominee have only until May 29 to ensure they are registered with the correct party.

Understanding Delaware’s Closed Primary System

Unlike some states that allow unaffiliated voters to choose a primary ballot on Election Day, Delaware restricts participation to voters registered with the party holding the primary election.

That means unaffiliated voters and members of third parties cannot vote in either the Republican or Democratic primary unless they change their party affiliation before the deadline.

For many voters, especially those who have recently moved or have not reviewed their registration status in several years, election officials recommend checking voter registration information now rather than waiting until the deadline has passed.

ACTION BOX:

What: Deadline to change political party affiliation for Delaware’s Sept. 15 primary election

Why It Matters: The Republican primary in the 36th Representative District is a rematch between Bryan Shupe and Patrick Smith. Their 2024 primary was decided by just 12 votes.

When: Friday, May 29, 2026

Who Can Vote: Delaware voters registered with the Republican Party may vote in Republican primaries; registered Democrats may vote in Democratic primaries.

How to Change Party Affiliation:
• Online at ivote.delaware.gov
• Download a voter registration form from Delaware Department of Elections
• Contact your county elections office

Primary Election Date: Sept. 15, 2026

General Election Date: Nov. 3, 2026

Bottom Line:

In the last 36th District Republican primary, just 12 votes separated the candidates. Voters who want a voice in this year’s rematch must be registered Republicans by May 29.