McCain campaign drops the POW card to defend his houses.

No, not kidding.

He also added: "This is a guy who lived in one house for five and a half years -- in prison," referring to the prisoner of war camp that McCain was in during the Vietnam War.

Also, the Obama campaign is running with this. (Read it. It's a big commitment.) They're trying to turn this into a moment of permanent definition like "I voted for it before I voted against it," "inventor of the internet," or George Bush Sr's grocery scanner moment.

They're so sure on this, they're not trying to hide the level of effort. (Does it help with ex-Clinton voters?)

It's pretty much an "open mike" for the Dems til next Thursday.