Poroshenko claims 55.9% of vote, avoids runoff
                                
                                
                                    (Newser) -
                                    The polls are closed in Ukraine, and national exit polls are indicating a clear first-round victory for chocolate magnate Petro Poroshenko, reports the  BBC . Poroshenko claimed a decisive 55.9% of the vote, while Yulia Tymoshenko won a distant second-place slot with only 12.9%, reports  the AP , amid heavy...