"If the major competitive states are split, we could be talking about a situation where one electoral vote matters," said Randall Adkins, a political science professor at the University of Nebraska at Omaha. Only Nebraska and Maine divide their electoral votes, though the votes have never actually been split. Obama has opened a campaign office in Omaha to make a play for the electoral vote decided by results in the 2nd Congressional District, which would be essential to victory if the election ended in a 269-269 electoral tie, neither candidate reaching the mandatory 270 electoral votes.