DON'T PANICI knew I should have posted this first instead of working on my Ohio post.
Rasmussen isn't tied, despite what you are seeing on RCP. The actual number is Romney 48.4 - Obama 47.6. You are seeing a rounding error.
Please keep in mind that Rasmussen is using a D/R/I of 39/36/25 and is showing Independents favoring Romney by 3 points and a 5 point cross over advantage.
If turnout is Even like I expect, then Romney leads in this poll by 3.6. If Rasmussen's own party ID poll is correct, then his lead is 5.3%.
Obama is at 47.6% in a D+3 poll 4 days before an election and his early voting numbers have crashed.
Explain to me how this points to an Obama victory? Because if that happens, it will be the first time in history. Kerry was at 47.4% at this point, lost the election, and won the Independents. And he didn't have skewed polls inflating his advantage.
If the Democrats can turnout at D+3 in this environment, given the level of enthusiasm the Republicans have, then they deserve to win. So quit panicking, go volunteer, and damn it VOTE!
Update: The ABC/WaPo tracker cancelled out Rasmussen by moving two points toward Romney. This was mostly due to Independent preference moving from +3 to +8 in one day. Probably a good Obama day (during Sandy) dropped off, while a good Romney day moved in.