Just looking at where the prediction markets are on the Election Evening:
Intrade - Obama 375 McCain 163
Hubdub - Obama 364 / McCain 174
Betfair - well, they don't do politics but reckon that the Democrats are in the 300 - 350 seats at 2.7:1 - but Man U is looking good
We shall see.... my observation is that social and digital media is skewed Democrat, as are exit polls apparently.
Update - 24 hours later and Mr Obama is in - our congratulation - and the win is 334 / 164 right now (we assume there are a few late results to come in).