Another big swing in Muhlenberg's tracking poll
(5/3-6, 410 LVs, MoE +/- 5%) of the Pennsylvania Senate race. Today, Rep. Joe Sestak (D) has pulled even with Sen. Arlen Specter in the race.

Senate Primary Election Matchup
Specter 43 (-2)
Sestak 43 (+3)
Und 13 (-1)

Specter's favorable rating has dropped from a high of 58 percent in the May 3 release to 54 percent in today's offering. Sestak meanwhile peaks at 48 percent, up from just 42 percent two days ago.

In the gubernatorial race, Allegheny County Executive Dan Onorato sees a slight uptick for the first time.

Gubernatorial Primary Election Matchup
Onorato 35 (+1)
Hoeffel 11 (-1)
Williams 10 (+2)
Wagner 8 (-1)
Und 36 (-3)

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