Incumbent Republican U-S Senator Chuck Grassley easily won his primary race as he seeks an eighth term. Jim Carlin, a Republican state senator from Sioux City, had challenged Grassley in Tuesday’s primary. It was the first time Grassley faced a primary opponent since winning a seat in the senate in 1980. Retired Navy Admiral Mike Franken will face Grassley in the General Election. Franken won the Democratic Party’s U-S Senate nomination with a double-digit victory over former Iowa Congresswoman Abby Finkenauer of Dubuque.















