Do they know something we don't know?

From the Washington Post:

The official White House line of supreme self-assurance comes from the top down. Bush has publicly and privately banished any talk of losing the GOP majorities, in part to squelch any loss of nerve among his legions. Come January, he said last week, "We'll have a Republican speaker and a Republican leader of the Senate."

Question: Do they know something we don't know?

Answer: I'm certainly not ruling it out. Maybe Diebold has given them some private assurances.