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Romney underperforming in East; Santorum cutting into margins

It's still early, but Mitt Romney appears to be underperforming in the Eastern part of Iowa, with a combination of a strong Ron Paul and Rick Santorum cutting into support in seven out of eight counties from Cedar Rapids to Davenport/Quad Cities.

Santorum is Catholic, and this is a heavily Catholic area. Santorum could see a coalition of Evangelicals in the West and Catholics in the East.

Romney numbers 2012 - 2008 by county
Linn (Cedar Rapids) 28 - 31 (-3)
Clinton 31 - 35 (-4)
Scott 26 - 31 (-5)
Jackson 25 - 38 (-13)
Dubuque 31 - 41 (-10)
Clayton 19 - 30 (-11)
Allawakee 47 - 28 (+19, but very small number of votes/population)
Fayette 15 - 25 (-9)