Midterms follows four competitive congressional races in three swing states, each of which has the potential to switch parties. In North Carolina, three leading Republicans - NC House Speaker Thom Tillis, Tea Party-backed Greg Brannon and Pastor Mark Harris are battling in the Primary for the opportunity to take on Senator Kay Hagan (D). In Colorado, former CO House Speaker Andrew Romanoff (D) is vying to for the 6th District House of Representatives seat currently held by Republican Mike Coffman. In Iowa, two open seats are up for grabs after the retirements of Democratic US Senator Tom Harkin and Republican Congressman Tom Latham. We begin in Iowa, where three leading Republicans hope to win the primary: former energy executive Mark Jacobs, State Senator Joni Ernst and college professor/radio host Sam Clovis. Jacobs led the race early by spending millions of his own dollars, but Ernst begins to attract attention for her quirky advertisements: one boasts of castrating hogs and one ...