[eyedigress]

This will take a minute. Why now? What does he have to gain?
To whom does the damage to McCain help?

[Def Conservative]

The Democrats will tear down anybody but Huckabee right around now because they want Huckabee to be the nominee.

[Eastbound]

Can McCain beat Obama? Maybe Obama thinks so.

[Mr. Mojo]

What does he [Kerry] have to gain? To whom does the damage to McCain help?

According to the latest polls (which show McCain beating any Dem candidate in the general with relative ease), it appears to help the Democrats.