COLUMBIA, S.C. (AP) – Voters across South Carolina will determine whether two incumbent congressmen and 39 legislators survive primary contests to be on November’s ballots.

Polls are open from 7 a.m. to 7 p.m. Tuesday.

The primaries feature no statewide races. But both Gov. Nikki Haley and Lt. Gov. Henry McMaster are campaigning, though for opposing candidates. While Haley is working to oust several Senate leaders, McMaster and other Haley allies support the incumbents’ re-election.

A group connected to Haley has spent hundreds of thousands of dollars backing her opposition campaigns.

The most watched congressional race pits former governor and U.S. Rep. Mark Sanford against state Rep. Jenny Horne of Summerville for the Lowcountry’s 1st District.

U.S. Rep. Mick Mulvaney also faces a GOP challenger for the 5th District along the North Carolina border.