DES MOINES — Republican candidates won all six races in Iowa Secretary of State Paul Pate’s State Fair Straw Poll. Conducted on iPads at the secretary of state’s booth inside the Varied Industries Building, the poll gauged fairgoers’ support for candidates in Iowa’s U.S. Senate, U.S. House and governor’s races. It was held throughout the State Fair, Aug. 11-21. More than 2,600 individuals cast votes.