Iowa’s primaries are setting up impactful races for the general election ahead on Nov. 3. Voters will make their choice for governor in an open race — a race with no incumbent on the ballot — for the first time since 2006. Iowans will also elect a new U.S. senator. The results in Iowa could even influence the balance of power in Washington, D.C. Republicans are looking to maintain their grip on state politics, and to lean on their margin over Democrats among active registered voters.