Tennessee Democrat Roy Herron is doing his best to take the shine off of GOP golden boy Stephen Fincher.

Running to succeed retiring Rep. John Tanner (D-Tenn.), Fincher, a farmer and gospel singer, was considered one of the Republicans' top prospects. That's in part because he symbolizes the kind of citizen-politician-outsider voters are responding to this cycle.

The fourth ad from Herron scratches away at Fincher’s personal narrative. "Stephen Fincher: hiding, breaking the law, unworthy of our trust," the announcer says in the spot.

Herron's ad stands in sharp contrast to one that Fincher started airing Tuesday in the Nashville media market. "We need to rise above politics and do what's right for our country," Fincher says in the ad. "I'm just one man, but I'm willing to sacrafice to change things, and then come back home to Frog Jump. ... This is no time for politicians."

--Updated at 11:59 p.m.