In 2004, the 527 group known as "Swift Boat Veterans for Truth" attacked Kerry early and it stuck.
If you recall, Bush disavowed them early on, too.
Bush calls for halt to Swift Boat veterans’ adsPresident calls so-called 527 ads ‘bad for the system’
MSNBC staff and news service reports
updated 7:03 p.m. CT, Mon., Aug. 23, 2004
CRAWFORD, Texas - President Bush on Monday criticized a commercial that accused John Kerry of inflating his own Vietnam War record, more than a week after the ad stopped running, and said broadcast attacks by outside groups have no place in the race for the White House.
“I think they’re bad for the system,” added Bush, who had ignored calls to condemn the ad while it was on the air.
Democrats criticized the president’s remarks at the same time they worked to limit the political damage from the ad, which they denounce as a smear sanctioned by Bush and his high command.
Link To Original Article From 2004 So Bush got his cake (attack on Kerry) and got to eat it, too (got to disavow the attack).
That's a very different situation from one where the actual McCain campaign are running the non-stop negative attacks after painting itself the "Straight Talk Express".
Just sayin'...