On the (D) side, usually a written off conclusion, you've got Bill Adkins vs. Greg Frank. This is actually an interesting race.
Adkins is about as progressive as you're going to get here in Northern Kentucky -- meaning that if you go to his website (http://billadkinscongress.com/) -- you get a sensible bill of goods. Or at least he doesn't mention being pro-life -- and he doesn't bring his religion into his positions on issues.
Frank, on the other hand, is a Libertarian wackaloon. He wrote a book called "Common Sense II: Death of Democracy," which you can see on his oh-by-the-way-I'm-running-for-office website: http://www.comsense2.com/
Adkins at worst would be a light blue dog if he's able to beat this guy. If he and Massie both win, you'll have another teabagger against a reasonable individual. I would hesitate to call this anything other than a longshot, but still...stranger things have happened, I s'pose.