2026 RUNOFF
U.S. Senate · South Carolina
One seat · current holder Lindsey Graham (R) · 12 candidates declared
Primary● Jun 9, 2026
Election day● Jun 23, 2026
General election● Nov 3, 2026
Voter reg deadline30 days before Election Day
Early voting opens15 days before Election Day
State Voting Deadlines
Election Day · Nov 3, 2026- Voter reg · in person
- 30 days before Election Day
- Voter reg · by mail
- 30 days before Election Day (postmarked)
- Voter reg · online
- 30 days before Election Day
- Early voting starts
- 15 days before Election Day
- Early voting ends
- 3 days before Election Day
- Absentee request · in person
- 11 days before Election Day
- Absentee request · by mail
- 11 days before Election Day (received)
- Ballot return · by mail
- Election Day (received)