Former Iowa Gov. Terry Branstad (R) is out to a 15-point lead over current Gov. Chet Culver (D), a new Public Policy Polling survey finds (May 25-27, 1277 RV, MoE +/- 2.7%). Culver also trails two other Republicans, Rod Roberts and Bob Vander Plaats, but by far narrower margins.

Branstad 52
Culver 37
Und 11

Roberts 40
Culver 38
Und 22

Vander Plaats 43
Culver 38
Und 19

Branstad is favored to win the Republican primary, with a PPP poll out this week showing him up 15 points.

“Chet Culver is in big trouble, and while Terry Branstad isn't massively popular, he takes advantage of Culver's vulnerability with his own party to take a large lead a week before the primary,” said PPP president Dean Debnam.

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