Pa. GOP candidate was Democrat until last year

This probably doesn't help when the GOP base is in the mood it's currently in.

From Pa2010.com:

Paul Huber, who is one of a few GOPers looking to take on Dahlkemper—and has been the most active in speaking out against her votes in Congress—was registered as a Democrat from 1975-2008, including during last year’s presidential primary and general elections, according to Crawford County records. He registered as a Republican before the primary election earlier this year.

In a statement, Huber said liberals in Congress had prompted his evolution from conservative Democrat to Republican.

“I had always considered myself a Reagan Democrat—believing in limited government, greater personal freedom, and a strong national defense,” Huber said. “I became a Republican because I could no longer stand by as liberals in Congress like Kathy Dahlkemper supported higher taxes, more spending, and more regulations that are killing jobs in Northwest Pennsylvania. I’m a lifelong businessman, not a career politician, and I believe we need to pursue common-sense conservative policies that will create jobs and grow the economy, get government spending under control, and reform health care without nationalizing it.”