Move over Regis. The Governors of Iowa and Minnesota may engage in a test of knowledge worthy of a game show.Last month, Minnesota Governor Jesse Ventura made a “light bulb” joke about Iowa college students — with a punch line that teaching students how to screw in a light bulb was a sophomore course. Last weekend, Ventura sort of apologized to Iowa Governor Tom Vilsack while the two attended the National Governors Association meeting in D-C.Vilsack has invited Ventura to Ventura, Iowa, for a joint appearance featuring the two Governors.Vilsack says the two might arm wrestle or have a “battle of wits.”