Drudge reports today:

“Democrat presidential hopeful John Kerry and his wife got into a heated argument after a campaign rally in Arizona Sunday night — a heated argument so hot they spent the night in different rooms!

A well-placed law enforcement source tells DRUDGE how Kerry and Teresa Heinz moved to separate suites at Flagstaff’s Little America Hotel. “

I’d say offhand, they know they’re in serious trouble, have known for some time, and the stress of it is getting to ’em.