U.S. Senator Joni Ernst, R-Iowa, won re-election to a second term defeating her Democratic challenger, Theresa Greenfield, 51.8 percent to 45.1 percent.
President Donald Trump defeated former Vice President Joe Biden 53.2 percent to 45 percent in Iowa with several battleground states still too close to call.
Republicans lead Democrats by 20,590 registered voters in Iowa, and Republicans have outpaced Democrats in their voter registration efforts since July.