Idaho Republican Rep. Mike Simpson fired back this week at his primary rival, attorney Bryan Smith, escalating one of the most high-profile House primaries of the 2014 elections so far. Last week, Smith went on the radio airwaves with an ad attacking Simpson — a close ally of Speaker John A. Boehner — for being "liberal," a charge Simpson's campaign denied. On Tuesday, Simpson sent out his own negative radio spot. The minute-long advertisement includes audio of a car crash and an ambulance, before the narrator accuses Smith of being a "personal injury lawyer." (more…)