2026 PRIMARY
U.S. Senate · Delaware
One seat · current holder Christopher Coons (D) · 4 candidates declared
Election day● Sep 15, 2026
General election● Nov 3, 2026
Voter reg deadline24 days before Election Day
Early voting opensAt least 10 days before Election Day
State Voting Deadlines
Election Day · Nov 3, 2026- Voter reg · in person
- 24 days before Election Day
- Voter reg · by mail
- 24 days before Election Day (postmarked)
- Voter reg · online
- 24 days before Election Day
- Early voting starts
- At least 10 days before Election Day
- Early voting ends
- 2 days before Election Day
- Absentee request · in person
- 1 day before Election Day at 12PM
- Absentee request · by mail
- 4 days before Election Day (received)
- Ballot return · by mail
- Election Day (received)
Automatic voter registration