Iowa 2012 vs 2020: county swing
94 of 99 counties moved toward the Republican ticket; 32 changed hands.
| County | 2012 | 2020 | Swing | Votes 2012 | Votes 2020 |
|---|---|---|---|---|---|
| Howard County flipped | D+21.0 | R+27.3 | R+48.3 | 4,645 | 4,952 |
| Jackson County flipped | D+16.9 | R+26.2 | R+43.1 | 10,242 | 11,118 |
| Chickasaw County flipped | D+11.1 | R+31.4 | R+42.5 | 6,484 | 6,617 |
| Wayne County | R+11.5 | R+51.9 | R+40.4 | 2,900 | 3,103 |
| Worth County flipped | D+14.5 | R+25.8 | R+40.3 | 4,172 | 4,414 |
| Adams County | R+3.7 | R+43.6 | R+39.9 | 2,185 | 2,155 |
| Ringgold County | R+7.0 | R+46.5 | R+39.5 | 2,599 | 2,708 |
| Taylor County | R+14.1 | R+53.0 | R+38.9 | 2,995 | 3,242 |
| Monroe County | R+7.7 | R+46.4 | R+38.7 | 3,830 | 4,085 |
| Clarke County flipped | D+1.5 | R+36.0 | R+37.5 | 4,430 | 4,661 |
| Lucas County | R+6.1 | R+43.3 | R+37.2 | 4,323 | 4,622 |
| Appanoose County | R+3.3 | R+40.3 | R+37.0 | 6,245 | 6,506 |
| Clayton County flipped | D+7.0 | R+28.8 | R+35.8 | 9,138 | 9,581 |
| Union County flipped | D+3.9 | R+31.6 | R+35.5 | 5,957 | 6,171 |
| Wapello County flipped | D+11.8 | R+23.6 | R+35.4 | 15,770 | 15,613 |
| Decatur County | R+4.1 | R+39.3 | R+35.2 | 3,833 | 3,801 |
| Delaware County | R+0.2 | R+35.2 | R+35.0 | 9,378 | 9,981 |
| Buchanan County flipped | D+13.9 | R+20.9 | R+34.8 | 10,535 | 10,764 |
| Keokuk County | R+10.3 | R+45.1 | R+34.8 | 5,266 | 5,291 |
| Lee County flipped | D+15.5 | R+19.3 | R+34.8 | 18,911 | 16,699 |
| Fayette County flipped | D+12.0 | R+22.7 | R+34.7 | 10,366 | 10,157 |
| Floyd County flipped | D+14.7 | R+19.4 | R+34.1 | 8,257 | 8,017 |
| Louisa County flipped | D+0.7 | R+33.3 | R+34.0 | 4,968 | 5,326 |
| Van Buren County | R+18.5 | R+52.5 | R+34.0 | 3,569 | 3,780 |
| Allamakee County flipped | D+4.1 | R+29.2 | R+33.3 | 6,934 | 7,413 |
| Clinton County flipped | D+22.9 | R+10.3 | R+33.2 | 25,000 | 24,638 |
| Fremont County | R+9.2 | R+42.4 | R+33.2 | 3,668 | 3,851 |
| Adair County | R+8.1 | R+41.2 | R+33.1 | 3,996 | 4,172 |
| Davis County | R+16.4 | R+49.3 | R+32.9 | 3,773 | 4,099 |
| Carroll County | R+6.2 | R+37.8 | R+31.6 | 10,674 | 11,306 |
| Mitchell County flipped | D+3.4 | R+27.9 | R+31.3 | 5,586 | 5,815 |
| Hancock County | R+13.5 | R+44.0 | R+30.5 | 5,925 | 6,161 |
| Audubon County | R+5.5 | R+35.8 | R+30.3 | 3,457 | 3,416 |
| Webster County flipped | D+5.8 | R+24.3 | R+30.1 | 18,292 | 17,790 |
| Sac County | R+18.4 | R+48.4 | R+30.0 | 5,291 | 5,527 |
| Calhoun County | R+12.5 | R+42.3 | R+29.8 | 5,230 | 5,249 |
| Monona County | R+9.6 | R+39.1 | R+29.5 | 4,742 | 4,714 |
| Jones County flipped | D+7.8 | R+21.5 | R+29.3 | 10,449 | 10,965 |
| Crawford County | R+7.8 | R+36.8 | R+29.0 | 6,752 | 7,146 |
| Greene County | R+0.1 | R+28.8 | R+28.7 | 4,846 | 5,051 |
| Jasper County flipped | D+7.1 | R+21.6 | R+28.7 | 19,515 | 20,143 |
| Butler County | R+10.3 | R+38.6 | R+28.3 | 7,545 | 8,084 |
| Pocahontas County | R+21.6 | R+49.6 | R+28.0 | 4,032 | 3,817 |
| Emmet County | R+8.7 | R+36.0 | R+27.3 | 4,687 | 4,850 |
| Kossuth County | R+12.2 | R+39.4 | R+27.2 | 8,923 | 9,077 |
| Mahaska County | R+20.5 | R+47.5 | R+27.0 | 10,883 | 11,381 |
| Benton County | R+0.6 | R+27.5 | R+26.9 | 14,023 | 14,622 |
| Des Moines County flipped | D+18.4 | R+8.5 | R+26.9 | 20,385 | 19,906 |
| Palo Alto County | R+10.6 | R+37.4 | R+26.8 | 4,887 | 4,950 |
| Tama County flipped | D+7.5 | R+19.2 | R+26.7 | 9,017 | 9,026 |
| Henry County | R+5.9 | R+32.4 | R+26.5 | 9,697 | 9,964 |
| Winnebago County | Even | R+26.4 | R+26.4 | 5,918 | 5,951 |
| Wright County | R+8.1 | R+34.3 | R+26.2 | 6,278 | 6,242 |
| Harrison County | R+12.7 | R+38.4 | R+25.7 | 7,322 | 8,144 |
| Guthrie County | R+10.3 | R+35.9 | R+25.6 | 5,888 | 6,363 |
| Hardin County | R+6.7 | R+32.0 | R+25.3 | 8,898 | 8,975 |
| Ida County | R+26.3 | R+51.0 | R+24.7 | 3,663 | 3,844 |
| Franklin County | R+10.7 | R+35.0 | R+24.3 | 5,186 | 5,119 |
| Hamilton County | R+2.6 | R+26.7 | R+24.1 | 7,927 | 7,917 |
| Cherokee County | R+16.0 | R+39.3 | R+23.3 | 6,415 | 6,503 |
| Muscatine County flipped | D+15.9 | R+7.1 | R+23.0 | 19,865 | 20,629 |
| Humboldt County | R+21.9 | R+44.7 | R+22.8 | 5,158 | 5,321 |
| Poweshiek County flipped | D+9.3 | R+13.4 | R+22.7 | 9,975 | 10,124 |
| Madison County | R+11.9 | R+34.4 | R+22.5 | 8,458 | 9,806 |
| Boone County flipped | D+6.6 | R+15.6 | R+22.2 | 14,388 | 15,306 |
| Cedar County flipped | D+4.6 | R+17.1 | R+21.7 | 9,649 | 10,680 |
| Osceola County | R+41.2 | R+62.9 | R+21.7 | 3,194 | 3,323 |
| Marion County | R+13.2 | R+33.8 | R+20.6 | 17,687 | 19,173 |
| Clay County | R+18.4 | R+38.9 | R+20.5 | 8,502 | 8,948 |
| Iowa County | R+4.8 | R+25.3 | R+20.5 | 8,866 | 9,716 |
| Winneshiek County flipped | D+14.7 | R+5.1 | R+19.8 | 11,084 | 12,036 |
| Cerro Gordo County flipped | D+13.4 | R+6.3 | R+19.7 | 23,824 | 23,744 |
| Cass County | R+18.8 | R+38.1 | R+19.3 | 7,205 | 7,266 |
| Bremer County flipped | D+2.7 | R+16.1 | R+18.8 | 13,346 | 14,516 |
| Page County | R+24.5 | R+43.0 | R+18.5 | 7,079 | 7,519 |
| Mills County | R+19.0 | R+37.4 | R+18.4 | 7,212 | 8,237 |
| Shelby County | R+22.2 | R+40.4 | R+18.2 | 6,483 | 6,781 |
| Dubuque County flipped | D+14.7 | R+2.9 | R+17.6 | 50,894 | 53,782 |
| Montgomery County | R+21.5 | R+39.0 | R+17.5 | 5,025 | 5,320 |
| Jefferson County flipped | D+15.9 | R+1.4 | R+17.3 | 8,530 | 8,926 |
| Marshall County flipped | D+9.4 | R+7.7 | R+17.1 | 19,064 | 18,097 |
| Washington County | R+4.0 | R+20.6 | R+16.6 | 11,004 | 11,745 |
| Woodbury County flipped | D+1.0 | R+15.6 | R+16.6 | 45,019 | 45,172 |
| Dickinson County | R+17.9 | R+33.6 | R+15.7 | 10,159 | 11,230 |
| Buena Vista County | R+10.2 | R+25.7 | R+15.5 | 8,383 | 8,149 |
| Plymouth County | R+34.2 | R+49.4 | R+15.2 | 12,950 | 14,165 |
| Grundy County | R+22.7 | R+37.5 | R+14.8 | 6,962 | 7,260 |
| Warren County | R+2.0 | R+16.8 | R+14.8 | 26,072 | 30,953 |
| Lyon County | R+54.6 | R+67.7 | R+13.1 | 6,509 | 6,852 |
| O'Brien County | R+44.9 | R+56.9 | R+12.0 | 7,341 | 7,541 |
| Pottawattamie County | R+5.3 | R+16.8 | R+11.5 | 42,301 | 45,639 |
| Black Hawk County | D+20.2 | D+9.1 | R+11.1 | 67,141 | 66,420 |
| Scott County | D+13.7 | D+3.5 | R+10.2 | 90,263 | 92,324 |
| Linn County | D+17.7 | D+13.8 | R+3.9 | 118,453 | 127,078 |
| Sioux County | R+67.6 | R+66.8 | D+0.8 | 17,308 | 18,956 |
| Polk County | D+14.1 | D+15.3 | D+1.2 | 228,882 | 257,991 |
| Story County | D+13.9 | D+17.4 | D+3.5 | 47,150 | 50,837 |
| Johnson County | D+35.5 | D+43.4 | D+7.9 | 75,977 | 83,570 |
| Dallas County | R+11.6 | R+2.0 | D+9.6 | 38,116 | 55,847 |
Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data