United States Senate – GOP Hold
Chuck Grassley (R-inc) – 718,215 – 64.35%
Roxanne Conlin (D) – 371,686 – 33.30%
John Heiderscheit (L) – 25,290 – 2.27%
Write-In – 872 – 0.08%
Total Votes – 1,116,063 – 100.00%
United States House of Representatives – District 1 – DEM Hold
Bruce Braley (D-inc) – 104,428 – 49.51%
Benjamin M. Lange (R) – 100,219 – 47.52%
Rob J. Petsche (L) – 4,087 – 1.94%
Jason A. Faulkner (I) – 2,092 – 0.99%
Write-In – 76 – 0.04%
Total Votes – 210,902 – 100.00%
United States House of Representatives – District 2 – DEM Hold
David Loebsack (D-inc) – 115,839 – 50.99%
Mariannette Miller-Meeks (R) – 104,319 – 45.92%
Gary Sicard (L) – 4,356 – 1.92%
Jon Tack (C) – 2,463 – 1.08%
Write-In – 198 – 0.09%
Total Votes – 227,175 – 100.00%
United States House of Representatives – District 3 – DEM Hold
Leonard Boswell (D-inc) – 122,147 – 50.73%
Brad Zaun (R) – 111,925 – 46.49%
Rebecca Williamson (SW) – 6,258 – 2.60%
Write-In – 426 – 0.18%
Total Votes – 240,756 – 100.00%
United States House of Representatives – District 4 – GOP Hold
Tom Latham (R-inc) – 152,588 – 65.62%
Bill Maske (D) – 74,300 – 31.95%
Dan Lensing (I) – 5,499 – 2.36%
Wirte-In – 132 – 0.06%
Total Votes – 232,519 – 100.00%
United States House of Representatives – District 5 – GOP Hold
Steve King (R-inc) – 128,363 – 65.75%
Matthew Campbell (D) – 63,160 – 32.35%
Martin James Monroe (I) – 3,622 – 1.86%
Write-In – 94 – 0.05%
Total Votes – 195,239 – 100.00%