We're beginning to see a bit of a rift between the US-based markets; Intrade moved 2% in Romney's direction, IEM did just the opposite.
The pro sports books have remained stable for the last two days.
The graph doesn't reflect this but Intrade has had the Electoral College at 281 for Obama, 235 for Romney every day except one (10/27). In the last three days, Obama's count has bumped to 290 thanks to Colorado occasionally moving from "tossup" to "leaning democrat."
Obama is averaging 72%, Romney is averaging 28%, a 46% spread with a little over two days left until the polling stations close.