Video: Obama and Romney last campaign day round up After a long, bitter and expensive campaign, national polls show United States President Barack Obama and Republican presidential candidate Mitt Romney are in a race too close to call ahead of Tuesday's election. Both have campaigned hard on the idea of "change," now both will try to convince voters in the swing states that they are the candidate to deliver it. The close margins in state and national polls suggested the possibility of a cliffhanger, that could be decided by the party that is most effective at getting voters to the polls. Ohio, the most pivotal of the swing states will get a last-day visit from both candidates.