In new Quinnipiac poll, Romney hold slight lead over Perry, the GOP '12 field among PA Republicans.
Romney 18
Perry 16
Santorum 12
Palin 8
Bachmann 6
Cain 5
Paul 5
Gingrich 4
Huntsman 2
Conducted Sept. 21-26, 2011. Margin of error 2.7 points.








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