According to a poll conducted in September 2009 by The Des Moines Register , he maintained a 70 % favorability rating from Iowans compared to Governor Chet Culver 's rating of 50 % .
According to a poll taken in September 2009 by The Des Moines Register , he had a 70 % positive rating from Iowans compared to Governor Chet Culver 's rating of 50 % .