COLUMBIA, S.C. — President Donald Trump endorsed three Republican gubernatorial candidates Friday, wading into contests in South Carolina, Iowa and Oklahoma that have pitted allies against each other in a fierce competition for their party leader’s blessing.

In a trio of social media posts, Trump gave his backing to South Carolina Lt. Gov. Pamela Evette, Iowa Rep. Randy Feenstra and former Oklahoma state senator Mike Mazzei as primary elections approach.

Iowa’s primary is Tuesday, South Carolina’s is on June 9 and Oklahoma’s is on June 16. All three states are having their first competitive Republican gubernatorial primaries in years.

For two terms, Evette has served alongside Gov. Henry McMaster, one of Trump’s earliest backers during his first presidential campaign. Earlier this year, the long-serving governor endorsed his No. 2, telegraphing to some that Trump’s backing could be next.

On Friday, Trump expressed both appreciation for Evette and the state she represents, noting that she stumped for him in 2024. He also said “A BIG added plus” for her campaign is that Henry McMaster Jr. — the sitting governor’s son — may be Evette’s running mate.

In the deep red state of South Carolina, the competition for the president’s support has been the most intense part of the primary race.

In a separate post, Trump described Feenstra as “MAGA all the way” and said he would “fight tirelessly” for the state on issues including the economy, border security and support of law enforcement.

Evette and Feenstra have been vocal about wanting Trump’s endorsement, in the hopes that it would carry weight in states that helped propel Trump’s return to office in 2024. Feenstra said earlier this year that he asked for Trump’s support, and much of Evette’s campaign media has featured photos of her next to Trump.

Along with Feenstra, four other Republicans — state Rep. Eddie Andrews, businessman and former conservative political director Zach Lahn, former state Rep. Brad Sherman and former director of the state Department of Administrative Services Adam Steen — are in the primary to replace outgoing Iowa Gov. Kim Reynolds, who opted out of a third bid.

Evette is competing for the South Carolina nomination against Rep. Nancy Mace, Rep. Ralph Norman and state Attorney General Alan Wilson.

Mazzei is running to replace Oklahoma Gov. Kevin Stitt, who is finishing his second term. He’s competing against state Attorney General Gentner Drummond, former state House Speaker Charles McCall and former state public safety secretary Chip Keating.

“Mike Mazzei has my Complete and Total Endorsement to be the next Governor of Oklahoma — HE WILL NEVER LET YOU DOWN!” Trump wrote on social media.