For the first time in 68 years, the Republican Party will need more than one ballot to pick its nominee this summer in Cleveland, Karl Rove predicted in his annual list of prognostications. "Delegates will be fractured-with many legally bound, for at least one ballot, to support the winner of their state or district-and at least two ballots will be required," he wrote in The Wall Street Journal. -snip- Should Donald Trump, the current leader in most statewide and national polling, become the party's pick, Rove predicted that the Democrats would maintain control of the White House for another four...