McConnell primary opponent loses top staffer

Senate Minority Leader Mitch McConnellMitch McConnellPeter Thiel does not make the GOP pro-gay Reid: Trump is a 'hateful con man' McAuliffe: Clinton won't move TPP without changes MORE'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.

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Rachel Semmel, businessman Matt Bevin's top spokeswoman, is no longer with his campaign, WFPL reports. 

"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 SchweikertDavid SchweikertFormer GOP congressman lobbying for electric cars Senate races heating up Tea Party class reassesses record MORE'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. 

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