| Ohio 2004 Presidenial Election Results | ||||||
| COUNTY | George W. Bush | John F. Kerry | Other | Total | Votes In Dispute | Machine Type |
| Adams | 7,653 | 4,280 | 66 | 11,999 | 1,186 | ESS Punch Card |
| Allen | 32,585 | 16,483 | 206 | 49,274 | 2,312 | ESS Optical Scan PB |
| Ashland | 16,171 | 8,555 | 194 | 24,920 | 0 | ESS Optical Scan CC |
| Ashtabula | 21,039 | 24,061 | 309 | 45,409 | 0 | Triad Punch Card |
| Athens | 10,847 | 18,997 | 200 | 30,044 | 0 | ESS Punch Card |
| Auglaize | 17,012 | 5,904 | 115 | 23,031 | 3,429 | ESS E-Voting Other |
| Belmont | 15,589 | 17,574 | 157 | 33,320 | 0 | ESS Punch Card |
| Brown | 12,647 | 7,140 | 105 | 19,892 | 2,221 | Triad Punch Card |
| Butler | 109,866 | 56,234 | 702 | 166,802 | 23,392 | ESS Punch Card |
| Carroll | 7,695 | 6,298 | 117 | 14,110 | 0 | Triad Punch Card |
| Champaign | 11,718 | 6,967 | 90 | 18,775 | 1,165 | Triad Punch Card |
| Clark | 34,938 | 33,534 | 331 | 68,803 | 0 | Triad Punch Card |
| Clermont | 62,946 | 25,885 | 211 | 89,042 | 11,765 | ESS Optical Scan CC |
| Clinton | 12,938 | 5,417 | 59 | 18,414 | 1,756 | Triad Punch Card |
| Columbiana | 25,754 | 23,426 | 283 | 49,463 | 0 | Triad Punch Card |
| Coshocton | 9,277 | 6,878 | 87 | 16,242 | 0 | ESS Optical Scan CC |
| Crawford | 13,885 | 7,773 | 143 | 21,801 | 1,969 | ESS Punch Card |
| Cuyahoga | 221,606 | 448,486 | 3,674 | 673,766 | 0 | ESS Punch Card |
| Darke | 18,307 | 7,849 | 161 | 26,317 | 3,856 | Triad Punch Card |
| Defiance | 11,393 | 6,975 | 144 | 18,512 | 1,070 | Triad Punch Card |
| Delaware | 53,142 | 27,048 | 265 | 80,455 | 5,354 | ESS Punch Card |
| Erie | 18,601 | 21,408 | 67 | 40,076 | 0 | ESS Optical Scan CC |
| Fairfield | 42,697 | 24,774 | 384 | 67,855 | 2,110 | ESS Punch Card |
| Fayette | 7,375 | 4,334 | 47 | 11,756 | 0 | ESS Punch Card |
| Franklin | 237,252 | 285,800 | 2,772 | 525,824 | 0 | Danaher Controls E-Voting |
| Fulton | 13,639 | 8,224 | 90 | 21,953 | 0 | Triad Punch Card |
| Gallia | 8,577 | 5,364 | 51 | 13,992 | 0 | Triad Punch Card |
| Geauga | 30,358 | 19,840 | 221 | 50,419 | 2,269 | ESS Optical Scan CC |
| Greene | 48,377 | 30,530 | 365 | 79,272 | 4,855 | Triad Punch Card |
| Guernsey | 9,961 | 7,768 | 111 | 17,840 | 0 | Triad Punch Card |
| Hamilton | 222,404 | 199,499 | 1,731 | 423,634 | 7,886 | ESS Punch Card |
| Hancock | 25,101 | 10,343 | 162 | 35,606 | 2,863 | ESS Optical Scan CC |
| Hardin | 8,436 | 4,889 | 60 | 13,385 | 0 | Dibold Optical Scan CC |
| Harrison | 4,274 | 3,780 | 55 | 8,109 | 0 | Triad Punch Card |
| Henry | 9,901 | 5,110 | 92 | 15,103 | 0 | Triad Punch Card |
| Highland | 12,212 | 6,194 | 76 | 18,482 | 1,845 | Triad Punch Card |
| Hocking | 6,935 | 6,173 | 88 | 13,196 | 0 | Triad Punch Card |
| Holmes | 8,466 | 2,695 | 57 | 11,218 | 1,221 | Triad Punch Card |
| Huron | 14,834 | 10,585 | 173 | 25,592 | 0 | Unknown Punch Card |
| Jackson | 8,585 | 5,699 | 49 | 14,333 | 0 | Triad Punch Card |
| Jefferson | 17,184 | 19,019 | 163 | 36,366 | 0 | ESS Punch Card |
| Knox | 17,081 | 9,828 | 157 | 27,066 | 0 | Micro Vote E-Voting Other |
| Lake | 62,193 | 59,049 | 581 | 121,823 | 0 | Sequoia E-Voting Other |
| Lawrence | 15,457 | 12,111 | 138 | 27,706 | 1,320 | ESS Punch Card |
| Licking | 49,014 | 30,051 | 351 | 79,416 | 3,043 | ESS Punch Card |
| Logan | 14,471 | 6,825 | 102 | 21,398 | 1,892 | Triad Punch Card |
| Lorain | 61,196 | 78,965 | 569 | 140,730 | 0 | Triad Punch Card |
| Lucas | 87,106 | 132,536 | 547 | 220,189 | 0 | Dibold Optical Scan CC |
| Madison | 11,120 | 6,200 | 78 | 17,398 | 1,237 | Triad Punch Card |
| Mahoning | 48,712 | 83,069 | 950 | 132,731 | 0 | ESS E-Voting Toch Screen |
| Marion | 17,171 | 11,930 | 157 | 29,258 | 0 | Triad Punch Card |
| Medina | 48,183 | 36,264 | 420 | 84,867 | 1,954 | Fidlar Doubleday Punch Card |
| Meigs | 6,273 | 4,437 | 61 | 10,771 | 0 | Triad Punch Card |
| Mercer | 15,649 | 5,117 | 122 | 20,888 | 3,748 | Triad Punch Card |
| Miami | 34,005 | 17,611 | 164 | 51,780 | 4,597 | ESS Optical Scan CC |
| Monroe | 3,424 | 4,243 | 62 | 7,729 | 1,034 | Triad Punch Card |
| Montgomery | 138,361 | 142,977 | 1,215 | 282,553 | 0 | Triad Punch Card |
| Morgan | 3,757 | 2,873 | 70 | 6,700 | 0 | Triad Punch Card |
| Morrow | 10,475 | 5,775 | 79 | 16,329 | 0 | Fidlar Doubleday Punch Card |
| Muskingum | 22,251 | 16,421 | 191 | 38,863 | 0 | Triad Punch Card |
| Noble | 3,841 | 2,654 | 45 | 6,540 | 0 | Triad Punch Card |
| Ottawa | 12,075 | 11,114 | 68 | 23,257 | 0 | ESS Optical Scan CC |
| Paulding | 6,205 | 3,610 | 64 | 9,879 | 0 | Triad Punch Card |
| Perry | 7,855 | 7,257 | 76 | 15,188 | 0 | Triad Punch Card |
| Pickaway | 14,160 | 8,578 | 112 | 22,850 | 1,352 | Micro Vote E-Voting Other |
| Pike | 6,519 | 5,989 | 67 | 12,575 | 0 | Triad Punch Card |
| Portage | 35,583 | 40,674 | 389 | 76,646 | 0 | Triad Punch Card |
| Preble | 13,733 | 7,274 | 119 | 21,126 | 1,575 | Triad Punch Card |
| Putnam | 14,370 | 4,392 | 87 | 18,849 | 2,709 | Triad Punch Card |
| Richland | 36,892 | 24,645 | 330 | 61,867 | 1,689 | ESS Punch Card |
| Ross | 17,229 | 13,977 | 463 | 31,669 | 0 | Micro Vote E-Voting Other |
| Sandusky | 16,198 | 12,653 | 104 | 28,955 | 0 | ESS Optical Scan CC |
| Scioto | 18,257 | 16,823 | 117 | 35,197 | 0 | ESS Punch Card |
| Seneca | 15,885 | 10,958 | 148 | 26,991 | 0 | Triad Punch Card |
| Shelby | 16,204 | 6,534 | 116 | 22,854 | 3,853 | ESS Punch Card |
| Stark | 92,211 | 95,338 | 907 | 188,456 | 0 | ESS Punch Card |
| Summit | 118,553 | 156,578 | 1,173 | 276,304 | 0 | Voting Technologies Punch Card |
| Trumbull | 40,976 | 66,673 | 495 | 108,144 | 0 | ESS Punch Card |
| Tuscarawas | 23,825 | 18,854 | 225 | 42,904 | 0 | ESS Punch Card |
| Union | 15,869 | 6,665 | 96 | 22,630 | 2,240 | Triad Punch Card |
| Van Wert | 10,678 | 4,094 | 54 | 14,826 | 1,750 | Triad Punch Card |
| Vinton | 3,251 | 2,651 | 28 | 5,930 | 0 | ESS Punch Card |
| Warren | 68,035 | 26,043 | 341 | 94,419 | 12,750 | Triad Punch Card |
| Washington | 17,480 | 12,475 | 146 | 30,101 | 0 | ESS Optical Scan CC |
| Wayne | 31,879 | 19,786 | 183 | 51,848 | 0 | ESS Punch Card |
| Williams | 12,040 | 6,481 | 118 | 18,639 | 1,389 | ESS Punch Card |
| Wood | 33,592 | 29,401 | 353 | 63,346 | 0 | Triad Punch Card |
| Wyandot | 7,256 | 3,707 | 81 | 11,044 | 0 | ESS Punch Card |
| Total | 2,858,727 | 2,739,952 | 26,952 | 5,625,631 | 130,656 | |
| Percent | 50.82% | 48.70% | 0.48% | 100.00% | 2.32% | |