Trump's grip on GOP faces fresh challenge in South Carolina governor battle

One week after President Donald Trump's endorsement-winning streak in high-profile Republican primaries was snapped, the president's immense clout over his party is facing another key test in South Carolina's GOP gubernatorial nomination face-off.

A week and a half ago, the president handed Lt. Gov. Pamela Evette 11th-hour support as she seeks to succeed a top Trump ally, term-limited Republican Gov. Henry McMaster.

Evette is facing off in the GOP primary against a handful of top rivals.