President Barack Obama is appearing in a new TV ad to bolster the primary election chances of Pennsylvania Sen. Arlen Specter.
The Specter campaign said a new ad airing statewide Tuesday features Obama reminding voters of Specter's vote for the president's economic stimulus bill last year.
Specter is in a closely contested Democratic primary against U.S. Rep. Joe Sestak. The primary is May 18.
Sestak says Specter switched parties last year simply to preserve his Senate job and can't be trusted to support Obama.
The 30-second spot shows footage from Obama's speech at a Specter rally in Philadelphia last September. Obama touts Specter's "deciding vote in favor of a recovery act that has helped pull us back from the brink."
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