NEW YORK (AP) -- An independent watchdog group is accusing John McCain's campaign of breaking a pledge not to air a negative TV ad on the anniversary of the 9/11 attacks. But a tracking company says it's found no evidence of that yet.
The group Factcheck.org says an advertising data and analysis firm found a negative ad from the McCain campaign airing on Denver television. But the Campaign Media Analysis Group says its data shows the ad actually aired on September 10th and it has no data showing that it aired again yesterday.
The McCain campaign also says there is no evidence the ad aired.
The 30-second ad in question criticizes the Obama campaign for what the Republicans call "disrespectful" treatment of McCain's running mate, Alaska Governor Sarah Palin.
Both presidential campaigns pledged to take a one-day break from attacks and traditional campaigning to mark 9/11.
(Copyright 2008 by The Associated Press. All Rights Reserved.)
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