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(Iowa) -- The midterm election ballots are taking shape after yesterday's primaries. Iowa's primary elections narrow the field of challengers in each political party. After topping Republican challenger Jim Carlin by more than 90-thousand votes, Incumbent U.S. Senator Chuck Grassley will face Democrat Michael Franken in November. The retired Navy Admiral topped former Congresswoman Abby Finkenauer by 23-thousand votes for the nomination. In the closest statewide race, Republican Todd Halbur edges out Mary Ann Hanusa by less than 5-thousand votes. Halbur will face State Auditor Rob Sand, and Democrat Joel Miller will face Secretary of State Paul Pate.
Kimberly Graham wins the democratic nomination to replace retiring Polk County Attorney John Sarcone. Graham will face off against Republican Allan Richards
Zach Nunn will also be on the ballot in the fall to face Third District Democratic Congresswoman Cindy Axne.
Iowa Governor Kim Reynolds and challenger Diedre Dejear ran unopposed through the primaries.