Former vice presidential nominee Sarah Palin will join Donald Trump at an Ames, Iowa, rally Tuesday to endorse the Republican presidential front-runner.

“I’m proud to endorse Donald J. Trump for president,” Palin said in a campaign statement hours before the rally.

Palin, a Tea Party favorite, is Trump’s highest-profile endorsement yet.

The rally is set to start at 6 p.m. EST. Watch the event live in the video above.