A new poll shows that Sen. Arlen Specter's lead is narrowing over the congressman who is challenging him in Pennsylvania's Senate Democratic primary.
The Quinnipiac University poll released Tuesday shows the fifth-term incumbent leading Rep. Joe Sestak 47 percent to 39 percent among likely voters.
Specter — a longtime Republican who switched his party affiliation a year ago — led 53 percent to 32 percent in the university's April poll. Sestak is a second-term congressman from suburban Philadelphia.
Fourteen percent of voters say they're undecided two weeks before the May 18 primary.
The survey of 930 Democrats was conducted in the week ending Sunday. The sampling error margin is plus or minus 3.2 percentage points.
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