Iowa 2008 vs 2016: county swing
99 of 99 counties moved toward the Republican ticket; 47 changed hands.
| County | 2008 | 2016 | Swing | Votes 2008 | Votes 2016 |
|---|---|---|---|---|---|
| Howard County flipped | D+25.8 | R+20.5 | R+46.3 | 4,728 | 4,559 |
| Worth County flipped | D+22.4 | R+21.7 | R+44.1 | 4,257 | 4,257 |
| Chickasaw County flipped | D+20.8 | R+23.0 | R+43.8 | 6,583 | 6,435 |
| Jackson County flipped | D+24.4 | R+19.3 | R+43.7 | 9,955 | 10,310 |
| Crawford County flipped | D+5.2 | R+37.9 | R+43.1 | 7,191 | 6,935 |
| Adams County flipped | D+3.3 | R+39.4 | R+42.7 | 2,206 | 2,106 |
| Emmet County flipped | D+3.9 | R+37.1 | R+41.0 | 5,015 | 4,753 |
| Clayton County flipped | D+17.2 | R+22.7 | R+39.9 | 8,989 | 9,129 |
| Kossuth County flipped | D+3.2 | R+36.2 | R+39.4 | 9,097 | 8,607 |
| Wayne County | R+7.0 | R+45.9 | R+38.9 | 2,980 | 2,940 |
| Palo Alto County flipped | D+2.8 | R+35.8 | R+38.6 | 4,806 | 4,703 |
| Monona County | R+2.4 | R+40.9 | R+38.5 | 4,796 | 4,572 |
| Allamakee County flipped | D+14.3 | R+24.1 | R+38.4 | 7,059 | 6,923 |
| Sac County | R+8.9 | R+46.6 | R+37.7 | 5,053 | 5,212 |
| Keokuk County | R+3.6 | R+41.1 | R+37.5 | 5,361 | 4,985 |
| Hancock County | R+3.6 | R+40.7 | R+37.1 | 5,930 | 5,871 |
| Clay County | R+5.2 | R+42.1 | R+36.9 | 8,398 | 8,617 |
| Floyd County flipped | D+21.9 | R+14.9 | R+36.8 | 8,091 | 8,060 |
| Fremont County | R+3.6 | R+40.2 | R+36.6 | 3,894 | 3,595 |
| Pocahontas County | R+8.4 | R+45.0 | R+36.6 | 4,011 | 3,865 |
| Mitchell County flipped | D+12.3 | R+24.0 | R+36.3 | 5,766 | 5,417 |
| Taylor County | R+8.6 | R+44.7 | R+36.1 | 3,026 | 3,029 |
| Fayette County flipped | D+16.6 | R+19.3 | R+35.9 | 10,259 | 9,975 |
| Monroe County | R+5.2 | R+41.0 | R+35.8 | 3,873 | 3,865 |
| Davis County | R+9.2 | R+44.9 | R+35.7 | 3,815 | 3,882 |
| Delaware County flipped | D+6.0 | R+29.6 | R+35.6 | 8,901 | 9,241 |
| Carroll County flipped | D+3.6 | R+31.6 | R+35.2 | 10,387 | 10,544 |
| Ida County | R+16.4 | R+51.6 | R+35.2 | 3,547 | 3,612 |
| Van Buren County | R+12.2 | R+47.3 | R+35.1 | 3,608 | 3,561 |
| Franklin County flipped | D+1.4 | R+33.6 | R+35.0 | 5,148 | 4,968 |
| Winnebago County flipped | D+8.6 | R+26.2 | R+34.8 | 6,082 | 5,787 |
| Appanoose County | R+1.9 | R+36.1 | R+34.2 | 6,176 | 6,136 |
| Wapello County flipped | D+13.6 | R+20.6 | R+34.2 | 15,931 | 15,149 |
| Audubon County flipped | D+3.0 | R+30.9 | R+33.9 | 3,435 | 3,412 |
| Buchanan County flipped | D+18.5 | R+15.0 | R+33.5 | 10,338 | 10,252 |
| Ringgold County | R+6.1 | R+39.6 | R+33.5 | 2,689 | 2,707 |
| Louisa County flipped | D+4.3 | R+28.4 | R+32.7 | 4,920 | 5,008 |
| Shelby County | R+9.7 | R+42.4 | R+32.7 | 6,453 | 6,370 |
| Cherokee County | R+7.6 | R+40.2 | R+32.6 | 6,365 | 6,258 |
| Harrison County | R+4.7 | R+37.2 | R+32.5 | 7,578 | 7,465 |
| Tama County flipped | D+12.2 | R+20.3 | R+32.5 | 8,850 | 8,752 |
| Calhoun County | R+7.7 | R+40.1 | R+32.4 | 5,195 | 5,159 |
| Butler County | R+4.7 | R+36.8 | R+32.1 | 7,166 | 7,513 |
| Lee County flipped | D+16.0 | R+16.0 | R+32.0 | 17,224 | 16,151 |
| Adair County | R+3.3 | R+34.9 | R+31.6 | 4,053 | 3,811 |
| Montgomery County | R+10.6 | R+42.0 | R+31.4 | 5,287 | 5,044 |
| Humboldt County | R+14.3 | R+45.5 | R+31.2 | 5,122 | 5,087 |
| Union County flipped | D+3.7 | R+27.4 | R+31.1 | 5,909 | 5,832 |
| Lucas County | R+6.7 | R+37.6 | R+30.9 | 4,471 | 4,354 |
| Dickinson County | R+5.4 | R+35.7 | R+30.3 | 9,906 | 10,354 |
| Benton County flipped | D+4.5 | R+25.7 | R+30.2 | 13,712 | 13,844 |
| Clarke County flipped | D+2.2 | R+28.0 | R+30.2 | 4,443 | 4,454 |
| Wright County | R+1.5 | R+31.6 | R+30.1 | 6,395 | 6,026 |
| Des Moines County flipped | D+23.1 | R+6.9 | R+30.0 | 20,570 | 19,103 |
| Osceola County | R+31.6 | R+61.6 | R+30.0 | 3,127 | 3,213 |
| Webster County flipped | D+8.5 | R+21.5 | R+30.0 | 18,554 | 17,430 |
| Hardin County flipped | D+0.9 | R+28.9 | R+29.8 | 8,859 | 8,533 |
| Jones County flipped | D+10.4 | R+19.0 | R+29.4 | 10,004 | 10,133 |
| Mahaska County | R+16.6 | R+45.3 | R+28.7 | 10,932 | 10,632 |
| Cass County | R+10.8 | R+39.4 | R+28.6 | 7,350 | 7,125 |
| Cerro Gordo County flipped | D+20.9 | R+7.7 | R+28.6 | 24,140 | 22,965 |
| Decatur County | R+0.8 | R+29.3 | R+28.5 | 4,102 | 3,734 |
| Clinton County flipped | D+23.1 | R+5.1 | R+28.2 | 24,719 | 23,067 |
| Cedar County flipped | D+9.6 | R+17.8 | R+27.4 | 9,665 | 9,541 |
| Plymouth County | R+25.1 | R+51.5 | R+26.4 | 12,512 | 13,190 |
| Jasper County flipped | D+7.5 | R+18.2 | R+25.7 | 19,421 | 19,034 |
| Henry County | R+5.0 | R+30.6 | R+25.6 | 9,377 | 9,404 |
| Guthrie County | R+7.7 | R+33.0 | R+25.3 | 5,847 | 5,750 |
| O'Brien County | R+34.8 | R+59.9 | R+25.1 | 7,333 | 7,406 |
| Iowa County flipped | D+0.2 | R+23.9 | R+24.1 | 8,546 | 8,904 |
| Page County | R+19.7 | R+43.8 | R+24.1 | 7,356 | 7,044 |
| Greene County flipped | D+0.5 | R+23.4 | R+23.9 | 4,804 | 4,821 |
| Hamilton County flipped | D+1.3 | R+22.6 | R+23.9 | 8,078 | 7,694 |
| Winneshiek County flipped | D+22.6 | R+0.8 | R+23.4 | 11,280 | 11,362 |
| Bremer County flipped | D+9.3 | R+13.6 | R+22.9 | 12,871 | 13,538 |
| Buena Vista County | R+1.8 | R+24.7 | R+22.9 | 8,418 | 8,278 |
| Mills County | R+16.5 | R+38.7 | R+22.2 | 7,282 | 7,698 |
| Dubuque County flipped | D+20.8 | R+1.2 | R+22.0 | 47,953 | 49,721 |
| Grundy County | R+16.9 | R+38.9 | R+22.0 | 6,828 | 6,872 |
| Lyon County | R+45.0 | R+67.0 | R+22.0 | 6,217 | 6,377 |
| Muscatine County flipped | D+15.6 | R+6.2 | R+21.8 | 19,119 | 19,434 |
| Boone County flipped | D+7.6 | R+13.7 | R+21.3 | 13,929 | 14,196 |
| Madison County | R+10.0 | R+31.1 | R+21.1 | 8,480 | 8,636 |
| Jefferson County flipped | D+20.2 | R+0.5 | R+20.7 | 8,631 | 8,156 |
| Marion County | R+10.8 | R+30.7 | R+19.9 | 17,030 | 17,816 |
| Washington County | R+0.7 | R+20.4 | R+19.7 | 10,626 | 10,929 |
| Pottawattamie County | R+1.9 | R+21.3 | R+19.4 | 42,320 | 42,680 |
| Woodbury County | R+0.5 | R+19.5 | R+19.0 | 44,801 | 43,718 |
| Poweshiek County flipped | D+11.7 | R+6.5 | R+18.2 | 10,031 | 9,833 |
| Marshall County flipped | D+9.3 | R+8.3 | R+17.6 | 18,657 | 17,980 |
| Warren County flipped | D+0.6 | R+16.2 | R+16.8 | 24,880 | 27,300 |
| Black Hawk County | D+22.4 | D+7.3 | R+15.1 | 64,775 | 64,405 |
| Scott County | D+14.5 | D+1.5 | R+13.0 | 86,371 | 86,220 |
| Linn County | D+21.5 | D+9.0 | R+12.5 | 113,355 | 117,098 |
| Sioux County | R+62.8 | R+68.7 | R+5.9 | 16,664 | 18,194 |
| Dallas County | R+5.5 | R+9.6 | R+4.1 | 32,640 | 38,252 |
| Story County | D+16.2 | D+12.3 | R+3.9 | 46,575 | 50,667 |
| Johnson County | D+41.5 | D+37.8 | R+3.7 | 72,975 | 76,940 |
| Polk County | D+14.6 | D+11.3 | R+3.3 | 214,386 | 231,555 |
Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data