Petro Poroshenko wins Ukraine's presidency in the first round, according to the results of two national exit polls, with approximately 56 percent of the vote. Ukrainians elected Petro Poroshenko to be their fifth president in a vote that was dubbed "the second independence referendum." Poroshenko won his presidency in the first round, according to two exit polls. The poll conducted by four TV channels showed that he received 57.8 percent of the vote. The national exit poll, conducted by a consortium of reputable survey takers, put Poroshenko at slightly less -- 55.9 percent of the votes, but still a clear...