Senate Minority Leader Mitch McConnell's (R-Ky.) Tea Party challenger has lost a top staffer with just one month to go before the Kentucky primary, according to a local radio station.
"Rachel has moved back to D.C. to pursue another career opportunity and is no longer with the campaign," Bevin spokeswoman Sarah Durand told WFPL. "The Bevin campaign is grateful for all she did for the team and wishes Rachel the best in her future endeavors."
Semmel left Rep. David Schweikert's (R-Ariz.) office last year to join Bevin's staff.
WFPL also reported at least two field operatives have also recently left Bevin's campaign.
The development is a setback for Bevin's campaign as he seeks to make up ground on McConnell, who has led by wide margins in the few public polls of the primary.