This may be a very close election - some pollsters are saying there's a 66% chance of that - but who knows.
We could easily wind up (from looking at the polls), with a popular vote favoring Romney, but an electoral college count that favors Obama - like what we had with Gore vs. Bush, but with the parties reversed.
In the event of a tie electoral vote, The House will appoint the President, (which would be Romney since it's Republican), and the Senate will appoint the V.P., (which would be Biden, since it's majority is from the Democratic party). That would REALLY be weird! (and quite unlikely to happen).
BIG influence from these "battleground" states in a national election!