Congressman Luke Messer, a Republican representing Indiana’s Sixth Congressional District, is set to formally announce his candidacy for the U.S. Senate. Messer’s campaign announced Wednesday that the announcement will come during a family barbecue next month.

“The Senate has struggled in recent weeks, and Hoosiers are tired of it. We need a proven conservative leader in the U.S. Senate to work alongside Senator Todd Young and get things done,” says Messer Statewide Finance Chairman Greg Pence.

Messer will campaign to replace incumbent Democratic Senator Joe Donnelly. The Republican National Committee has identified Donnelly as a vulnerable candidate and is expected to pour money into the state in an effort to expand the Republican majority in the U.S. Senate.

Rep. Messer is set to make his candidacy official on Aug. 12th at 1 p.m.