The Qinnipiac poll started a week before the PPP one; I think a few % of the difference are just change over time and the effect of the Tuesday primaries.
A 'few %' but does that account for a full reversal in 3 days? Not likely.
- 41% Santorum - 35% Romney / "From March 27 - April 1, Quinnipiac University surveyed 647 likely Republican primary voters with a margin of error of +/- 3.9 percentage points. Live interviewers call land lines and cell phones."
- 42% Romney - 37% Santorum / PPP surveyed 403 likely Republican primary voters on April 4th. The margin of error for the survey is +/-4.9%.
I disrespect each polling org equally, but PPP is a straight-up Dem affiliate and Debnam is quite capable of douchebaggery. This sort of childish thing aligns Dean with Zogby:
“The momentum in Pennsylvania is moving completely against Rick Santorum. Mitt Romney has a great chance to deliver a final crushing blow to his campaign on April 24th. A home state loss would be incredibly embarrassing for Santorum.”