RNC Chairman Reince Priebus said he no longer thinks a contested convention is a remote possibility and party officials are trying to be transparent to “take the mystery away from what an open convention looks like,” he said on ABC News' “This Week” Sunday. “I think it’s possible and we’re preparing for that possibility,” he said. If a candidate does not have the 1,237 delegates required to win the nomination outright, it sets up a contested convention, during which some delegates are freed up in subsequent rounds of voting to choose whomever they want. Priebus said it was a common practice for party leadership to continue voting until someone reaches a majority of delegates. “There’s nothing magical about the number.