The National Rifle Association’s Political Victory Fund endorsed a candidate in Wisconsin’s competitive Republican Senate primary election on Tuesday, boosting Leah Vukmir’s bid to take on incumbent Sen. Tammy Baldwin this November.

Vukmir, who’s secured endorsements from an array of Wisconsin’s Republican power brokers, is facing off against Kevin Nicholson, a Marine veteran and business consultant with influential endorsements of his own. Vukmir was endorsed, most notably, by the state GOP back in May, and has since won House Speaker Paul Ryan’s valuable endorsement.