That image is a NY Times image; I post it only because I'm not sure when they'll take it down.
Yes, that's John McCain hugging GW Bush on the campaign trail today. Or, judging by his stiff posture and the look on his face, it could be him having a heart attack and falling into GW's arms.
Aside to Senator McCain: thank you, Senator, for reminding us (lest we forget your toadying in light of your recent criticism of the pres) that ultimately, your political career means much, much more to you than your dignity and self-respect. But hey, it was nice while it lasted!