Answer
Chet Culver was defeated by Terry Branstad in the 2010 gubernatorial election. Branstad, a Republican, had previously served as governor from 1983 to 1999. Culver, a Democrat, was elected in 2006, but his popularity declined during his term due to the state's economic struggles. Branstad's victory marked the return of Republican control to the Iowa governorship after four years of Democratic leadership.