11/08/2008 05:12 am ET Updated May 25, 2011

Palin Drops Ayers Reference From Stump Speech

After attacking Barack Obama's association with William Ayers for several days running, including yesterday, Sarah Palin made no mention of Ayers in her speech at a joint appearance with McCain in Pennsylvania that ended moments ago. Neither did McCain.

The missing Ayers reference suggest that the Ayers attacks may have backfired, and that the Obama campaign's counter-attack -- that the McCain team wants to use slimy negative attacks to distract from a discussion from the economy -- may have been effective.

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