With Election Day In Sight, Obama And Romney Engage In Cross-Country Blitz

WASHINGTON -- President Barack Obama and Republican rival Mitt Romney engaged in a frenzied cross-country blitz of the remaining toss-up states Sunday, with both sides predicting victory in a race that remains too close to call just two days before Election Day.

National opinion polls showed a race for the popular vote in Tuesday's election so close that only a statistically insignificant point or two separated the two rivals.

But the majority of polls in the battleground states -- especially in the Midwestern states of Iowa, Wisconsin and Ohio -- showed Obama with a slight advantage, giving him an easier path to the 270 electoral votes needed for victory. No Republican has won the White House without carrying Ohio.

Under the U.S. system, the winner is not determined by the nationwide popular vote but in state-by-state contests, making "battleground" states that are neither consistently Republican nor Democratic extremely important in such a tight race. Romney and Obama are actually competing to win at least 270 electoral votes. The electoral votes are apportioned to states based on a mix of population and representation in Congress.

That raises the possibility of a replay of the 2000 election when Republican George W. Bush won the presidency with an electoral vote majority, while Democrat Al Gore had a narrow lead in the nationwide popular vote.

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