Iowa 2000 vs 2004: county swing
74 of 99 counties moved toward the Republican ticket; 9 changed hands.
| County | 2000 | 2004 | Swing | Votes 2000 | Votes 2004 |
|---|---|---|---|---|---|
| Ida County | R+16.0 | R+24.6 | R+8.6 | 3,491 | 3,774 |
| Winnebago County flipped | D+0.5 | R+7.8 | R+8.3 | 5,527 | 5,952 |
| Page County | R+32.5 | R+40.4 | R+7.9 | 7,059 | 7,513 |
| Lyon County | R+48.7 | R+56.5 | R+7.8 | 5,342 | 6,101 |
| Louisa County flipped | D+1.9 | R+5.6 | R+7.5 | 4,637 | 4,916 |
| Dallas County | R+9.0 | R+16.2 | R+7.2 | 19,330 | 26,293 |
| Keokuk County | R+7.9 | R+15.0 | R+7.1 | 4,947 | 5,480 |
| Clay County | R+9.2 | R+15.7 | R+6.5 | 7,578 | 8,588 |
| Pottawattamie County | R+11.8 | R+18.3 | R+6.5 | 34,467 | 41,820 |
| Madison County | R+8.1 | R+14.5 | R+6.4 | 6,969 | 8,004 |
| Audubon County | R+3.4 | R+9.7 | R+6.3 | 3,784 | 3,592 |
| Carroll County | R+4.4 | R+10.2 | R+5.8 | 9,568 | 10,524 |
| Dickinson County | R+6.9 | R+12.6 | R+5.7 | 8,121 | 9,553 |
| Guthrie County | R+6.3 | R+11.9 | R+5.6 | 5,469 | 5,994 |
| Warren County | R+0.6 | R+6.2 | R+5.6 | 19,653 | 23,053 |
| Calhoun County | R+12.8 | R+18.2 | R+5.4 | 5,041 | 5,542 |
| Henry County | R+6.5 | R+11.6 | R+5.1 | 8,671 | 9,457 |
| Fremont County | R+16.9 | R+21.8 | R+4.9 | 3,616 | 3,911 |
| Lee County | D+19.8 | D+15.0 | R+4.8 | 16,572 | 17,858 |
| Mills County | R+27.8 | R+32.3 | R+4.5 | 5,915 | 6,940 |
| Lucas County | R+7.7 | R+12.1 | R+4.4 | 4,303 | 4,571 |
| Boone County | D+5.3 | D+1.2 | R+4.1 | 12,249 | 14,009 |
| Osceola County | R+37.6 | R+41.7 | R+4.1 | 3,063 | 3,266 |
| Harrison County | R+19.1 | R+23.1 | R+4.0 | 6,543 | 7,680 |
| Shelby County | R+24.5 | R+28.5 | R+4.0 | 6,009 | 6,670 |
| Taylor County | R+16.9 | R+20.6 | R+3.7 | 3,096 | 3,190 |
| Davis County | R+7.0 | R+10.6 | R+3.6 | 3,758 | 3,918 |
| Sioux County | R+68.7 | R+72.3 | R+3.6 | 14,692 | 16,570 |
| Franklin County | R+10.8 | R+14.3 | R+3.5 | 4,938 | 5,521 |
| Greene County flipped | D+0.4 | R+3.1 | R+3.5 | 4,719 | 5,113 |
| Sac County | R+13.5 | R+17.0 | R+3.5 | 5,033 | 5,374 |
| Palo Alto County | R+0.3 | R+3.7 | R+3.4 | 4,823 | 5,191 |
| O'Brien County | R+35.6 | R+38.8 | R+3.2 | 7,044 | 7,731 |
| Wapello County | D+13.5 | D+10.3 | R+3.2 | 15,139 | 16,707 |
| Benton County | D+3.8 | D+0.7 | R+3.1 | 11,766 | 13,501 |
| Cass County | R+25.0 | R+28.1 | R+3.1 | 6,880 | 7,543 |
| Jones County | D+5.4 | D+2.3 | R+3.1 | 9,143 | 9,978 |
| Washington County | R+9.9 | R+12.9 | R+3.0 | 9,094 | 10,688 |
| Buena Vista County | R+13.3 | R+16.1 | R+2.8 | 7,977 | 8,490 |
| Cerro Gordo County | D+12.6 | D+9.8 | R+2.8 | 22,162 | 24,516 |
| Butler County | R+16.4 | R+19.0 | R+2.6 | 6,724 | 7,475 |
| Kossuth County | R+7.3 | R+9.9 | R+2.6 | 8,878 | 9,258 |
| Mitchell County | D+5.0 | D+2.5 | R+2.5 | 5,162 | 5,480 |
| Buchanan County | D+10.1 | D+7.7 | R+2.4 | 9,410 | 10,475 |
| Plymouth County | R+26.6 | R+28.9 | R+2.3 | 10,118 | 12,222 |
| Emmet County | R+3.5 | R+5.7 | R+2.2 | 4,630 | 5,156 |
| Marion County | R+18.2 | R+20.4 | R+2.2 | 14,408 | 16,696 |
| Pocahontas County | R+12.2 | R+14.4 | R+2.2 | 4,141 | 4,313 |
| Cherokee County | R+9.3 | R+11.3 | R+2.0 | 6,592 | 6,796 |
| Adams County | R+12.7 | R+14.6 | R+1.9 | 2,145 | 2,325 |
| Grundy County | R+28.0 | R+29.9 | R+1.9 | 6,111 | 6,849 |
| Hancock County | R+13.0 | R+14.9 | R+1.9 | 5,438 | 5,905 |
| Ringgold County | R+4.6 | R+6.5 | R+1.9 | 2,692 | 2,778 |
| Delaware County | R+5.6 | R+7.4 | R+1.8 | 8,349 | 9,200 |
| Worth County | D+13.7 | D+11.9 | R+1.8 | 4,004 | 4,123 |
| Scott County | D+4.3 | D+2.6 | R+1.7 | 70,568 | 82,722 |
| Floyd County | D+8.8 | D+7.4 | R+1.4 | 7,238 | 8,167 |
| Montgomery County | R+29.2 | R+30.6 | R+1.4 | 5,394 | 5,556 |
| Mahaska County | R+27.3 | R+28.6 | R+1.3 | 9,543 | 10,728 |
| Wright County | R+9.3 | R+10.6 | R+1.3 | 6,336 | 6,603 |
| Cedar County flipped | Even | R+1.2 | R+1.2 | 8,344 | 9,694 |
| Monroe County | R+4.3 | R+5.4 | R+1.1 | 3,647 | 3,963 |
| Polk County | D+5.6 | D+4.6 | R+1.0 | 174,167 | 202,618 |
| Clinton County | D+13.7 | D+12.8 | R+0.9 | 22,180 | 24,684 |
| Humboldt County | R+18.1 | R+19.0 | R+0.9 | 4,940 | 5,350 |
| Dubuque County | D+14.6 | D+13.8 | R+0.8 | 40,323 | 47,043 |
| Muscatine County | D+3.6 | D+2.8 | R+0.8 | 16,076 | 18,717 |
| Hardin County | R+8.9 | R+9.6 | R+0.7 | 8,435 | 8,949 |
| Black Hawk County | D+12.1 | D+11.5 | R+0.6 | 55,085 | 63,907 |
| Bremer County | R+4.5 | R+5.1 | R+0.6 | 11,175 | 12,779 |
| Van Buren County | R+16.2 | R+16.7 | R+0.5 | 3,561 | 3,836 |
| Adair County | R+12.7 | R+13.0 | R+0.3 | 4,123 | 4,278 |
| Crawford County | R+9.8 | R+10.1 | R+0.3 | 6,555 | 7,242 |
| Des Moines County | D+20.5 | D+20.3 | R+0.2 | 19,365 | 20,874 |
| Tama County | D+0.1 | D+0.4 | D+0.3 | 8,315 | 9,001 |
| Clarke County | D+2.3 | D+2.7 | D+0.4 | 4,176 | 4,566 |
| Decatur County | R+6.2 | R+5.8 | D+0.4 | 3,709 | 4,011 |
| Iowa County | R+8.9 | R+8.3 | D+0.6 | 7,413 | 8,454 |
| Linn County | D+9.2 | D+10.0 | D+0.8 | 92,064 | 110,740 |
| Wayne County | R+12.1 | R+11.3 | D+0.8 | 3,021 | 3,133 |
| Woodbury County | R+3.1 | R+2.3 | D+0.8 | 37,896 | 44,195 |
| Jackson County | D+13.0 | D+14.1 | D+1.1 | 9,032 | 10,011 |
| Union County | R+8.0 | R+6.9 | D+1.1 | 5,740 | 5,978 |
| Howard County | D+11.2 | D+12.5 | D+1.3 | 4,491 | 4,697 |
| Monona County | R+4.8 | R+3.5 | D+1.3 | 4,560 | 5,018 |
| Webster County | D+1.8 | D+3.2 | D+1.4 | 17,048 | 18,631 |
| Fayette County flipped | R+1.1 | D+0.6 | D+1.7 | 9,621 | 10,392 |
| Hamilton County | R+7.4 | R+5.7 | D+1.7 | 7,574 | 8,335 |
| Marshall County | R+2.6 | R+0.6 | D+2.0 | 17,624 | 19,164 |
| Story County | D+3.5 | D+5.6 | D+2.1 | 35,364 | 44,652 |
| Chickasaw County | D+7.6 | D+9.8 | D+2.2 | 6,584 | 6,806 |
| Clayton County | D+2.3 | D+4.7 | D+2.4 | 8,571 | 9,168 |
| Poweshiek County flipped | R+2.0 | D+0.8 | D+2.8 | 8,980 | 10,091 |
| Appanoose County | R+7.6 | R+4.3 | D+3.3 | 5,704 | 6,450 |
| Winneshiek County flipped | R+3.2 | D+0.2 | D+3.4 | 9,417 | 10,784 |
| Johnson County | D+25.2 | D+29.3 | D+4.1 | 52,769 | 65,373 |
| Allamakee County | R+6.1 | R+1.2 | D+4.9 | 6,462 | 7,062 |
| Jasper County flipped | R+0.1 | D+4.8 | D+4.9 | 17,835 | 20,062 |
| Jefferson County flipped | R+5.1 | D+10.1 | D+15.2 | 7,548 | 8,281 |
Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data