Biden's Prediction: Inside Information or Pure Bluster?

Vice President Joe Biden, quoted in the Times a few days ago:

“The day after the election, there will be a Democratic majority in the House and a Democratic majority in the Senate. If it weren’t illegal, I’d make book on it.”

A cynic might say it’s easy to offer a bet that can’t be taken, and that Biden’s bluster is nothing but bluster.
Or maybe he knows something that no one else knows?
At Dublin-based InTrade, meanwhile, where it is legal to bet on politics, Biden could make a boatload if he’s right. Here’s the current trading contract for a new GOP majority in the House:


Price for 2010 US House of Representatives Control at intrade.com
A GOP Senate takeover, meanwhile, doesn’t appear likely:


Price for 2010 US Senate Control at intrade.com