RCP has Obama ahead in all battleground except for Florida and North Carolina.
Over-sampling will lead to silly, useless, irrelevant skewed results.
At any rate, the only poll that ultimately counts is the vote tomorrow. I have been watching all the major polls for some time now and it will be interesting to see which ones have been the most accurate. For some time now Rasmussen has had an excellent track record but no way he's attempting to call the election anywhere at this time in any of the close ones.