Today was the best day of the campaign so far. Why? Because the McCain campaign attacked Barack Obama...for attacking John McCain. It's not the attack -- it's what the attack means.

Finally, we've reached the general election. The primary is over, except for the cleaning up. It's now John McCain vs. Barack Obama.

The dispute centers on McCain's attempt to inject the words of Hamas into the presidential election, a blatant smear intended to make Obama appear sympathetic to radical terrorists. On CNN today, Obama said that McCain's attack was "dissapointing" and "offensive" and that McCain had "lost his bearings," straying from the high-minded campaign he had once promised to run.

The McCain camp attempted to steer discussion away from McCain's comments, saying that Obama's use of the the phrase "lost his bearings" was a transparent "way of raising John McCain's age as an issue." In response, the Obama camp called the McCain attack "bizarre," adding that "clearly losing one's bearings has no relation to age."

Here's video of Obama on CNN making the comments that provoked the McCain camp's ire. It's vintage Obama, tough but composed. As Joe Sudbay notes: "This is a sign of things to come -- and it is going to be fun.  John McCain has no idea what he's in for."