In this March 12, 2014 photo Nebraska Republican Senate candidate Ben Sasse, the president of Midland University, campaigns in Elmwood, Neb. Nebraska, home of nice-guy politics, is a new front in the bitter national struggle inside the Republican Party between established leaders determined to maintain control and right-wing insurgents trying to change the party’s direction. Tea party groups are endorsing Sasse and party powerbrokers including Senate Minority Leader Mitch McConnell and his allies are quietly backing his opponent, Shane Osborn, and steering the majority leader’s donors his way. (AP Photo/Nati Harnik)