Who the Hell is Knocking at the Door at 5 in the Morning?

Here's a cool story about Obama keepin' it real.

I've always thought if I was a candidate for the presidency of the U.S., one of the things that I would do would be to get out and knock on doors myself. Sure, you can't reach as many people as a prime time ad, but the people you do reach are probably going to vote for you, if nothing else for the fact that they can say "I remember the time I was eating lunch and President X knocked on my door and we chatted for a while."

Can anyone see Kerry doing this?