Sestak beats Specter in Pa. Dem Senate race
Party-switching incumbent unable to overcome primary challenge
msnbc.com staff and news service reports
updated 10 minutes ago
WASHINGTON - Sen. Arlen Specter has been defeated in a Pennsylvania primary in his bid for a sixth term after taking the risky step of switching to the Democratic Party.
Voters Tuesday picked U.S. Rep. Joe Sestak as the party's nominee and rejected the 80-year-old Specter in his first Democratic campaign.
The vote also was a defeat for President Barack Obama, who supported Specter when he abandoned the Republican Party last year.
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