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Schwartz won't challenge Specter

From NBC's Kelly O'Donnell

Aides to Rep. Allyson Schwartz say the third-term Pennsylvania Democrat will not seek her party's nomination for the U.S. Senate in 2010. 

Schwartz was among those widely talked about as a possible candidate, and had considered a Senate run. But after Arlen Specter's party switch, Schwartz plans to support him and will focus on having a larger role in health-care policy in the House of Representatives.