June 22, 2026

Opinion Diagnostics surveyed 875 likely voters in the final two days before the South Carolina Republican runoff for governor. The survey was fielded June 21-22, 2026, and has a margin of error of ±3.3%. This poll had no outside sponsor.

Key findings

• Alan Wilson led Pamela Evette 65% to 23%, a 42-point margin, with 12% undecided.

• Wilson won the June 23 runoff with about 68% of the vote.

Media coverage

• The New York Times: South Carolina Governor Election 2026: Latest Polls (June 2026)

• RealClearPolling: 2026 South Carolina Governor - GOP Runoff (June 2026)