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Romney underperformed in Western Missouri River counties, too

Earlier we noted that Mitt Romney underperformed in Eastern Mississippi River counties, but he underperformed in the West in counties bordering the Missouri River. 

Notably, Rick Santorum even flipped Woodbury (where Sioux City is), which Romney won in 2008.

WOODBURY
Santorum 32
Romney 28 (down from 38 in 08)
Paul 15

PLYMOUTH
Romney 29 (down from 34 in 08)
Santorum 28
Paul 15

SIOUX
Santorum 46
Romney 14 (same as 08)
Perry 14
Paul 13

LYON
Santorum 61 (Huckabee got 42 in 08)
Paul 11
Perry 10
Gingrich 8
Romney 7 (down from 20 in 08)

HARRISON
Santorum 25
Paul 21
Romney 18 (down from 35 in 08)

POTTAWATTAMIE
Romney 27 (down from 33 in 08)
Santorum 24
Perry 19