| State | EV | EV | Total Vote | O | M | Margin |
%Margin | Obama | McCain | Other | Obama | McCain | Other |
| Alabama | 0 | 9 | 2,099,819 | 2 | 1 | 453,067 | 21.58% | 38.74% | 60.32% | 0.94% | 813,479 | 1,266,546 | 19,794 |
| Alaska | 0 | 3 | 326,197 | 2 | 1 | 70,247 | 21.54% | 37.89% | 59.42% | 2.69% | 123,594 | 193,841 | 8,762 |
| Arizona | 0 | 10 | 2,303,838 | 2 | 1 | 195,404 | 8.48% | 44.91% | 53.39% | 1.69% | 1,034,707 | 1,230,111 | 39,020 |
| Arkansas | 0 | 6 | 1,086,617 | 2 | 1 | 215,707 | 19.85% | 38.86% | 58.72% | 2.42% | 422,310 | 638,017 | 26,290 |
| California | 55 | 0 | 13,577,265 | 1 | 2 | 3,262,692 | 24.03% | 60.94% | 36.91% | 2.14% | 8,274,473 | 5,011,781 | 291,011 |
| Colorado | 9 | 0 | 2,401,462 | 1 | 2 | 215,004 | 8.95% | 53.66% | 44.71% | 1.63% | 1,288,633 | 1,073,629 | 39,200 |
| Connecticut | 7 | 0 | 1,646,793 | 1 | 2 | 368,345 | 22.37% | 60.59% | 38.22% | 1.19% | 997,773 | 629,428 | 19,592 |
| Delaware | 3 | 0 | 412,616 | 1 | 2 | 103,085 | 24.98% | 61.91% | 36.93% | 1.16% | 255,459 | 152,374 | 4,783 |
| D. C. | 3 | 0 | 265,853 | 1 | 2 | 228,433 | 85.92% | 92.46% | 6.53% | 1.01% | 245,800 | 17,367 | 2,686 |
| Florida | 27 | 0 | 8,411,861 | 1 | 2 | 236,148 | 2.81% | 50.91% | 48.10% | 0.99% | 4,282,367 | 4,046,219 | 83,275 |
| Georgia | 0 | 15 | 3,932,158 | 2 | 1 | 204,636 | 5.20% | 46.90% | 52.10% | 1.00% | 1,844,123 | 2,048,759 | 39,276 |
| Hawaii | 4 | 0 | 453,568 | 1 | 2 | 205,305 | 45.26% | 71.85% | 26.58% | 1.57% | 325,871 | 120,566 | 7,131 |
| Idaho | 0 | 4 | 658,454 | 2 | 1 | 166,572 | 25.30% | 35.91% | 61.21% | 2.89% | 236,440 | 403,012 | 19,002 |
| Illinois | 21 | 0 | 5,528,499 | 1 | 2 | 1,388,169 | 25.11% | 61.85% | 36.74% | 1.41% | 3,419,348 | 2,031,179 | 77,972 |
| Indiana | 11 | 0 | 2,756,340 | 1 | 2 | 28,391 | 1.03% | 49.85% | 48.82% | 1.33% | 1,374,039 | 1,345,648 | 36,653 |
| Iowa | 7 | 0 | 1,537,123 | 1 | 2 | 146,561 | 9.53% | 53.93% | 44.39% | 1.68% | 828,940 | 682,379 | 25,804 |
| Kansas | 0 | 6 | 1,238,873 | 2 | 1 | 184,890 | 14.92% | 41.55% | 56.48% | 1.97% | 514,765 | 699,655 | 24,453 |
| Kentucky | 0 | 8 | 1,827,587 | 2 | 1 | 296,477 | 16.22% | 41.15% | 57.37% | 1.49% | 751,985 | 1,048,462 | 27,140 |
| Louisiana | 0 | 9 | 1,960,761 | 2 | 1 | 365,286 | 18.63% | 39.93% | 58.56% | 1.50% | 782,989 | 1,148,275 | 29,497 |
| Maine | 4 | 0 | 731,163 | 1 | 2 | 126,650 | 17.32% | 57.71% | 40.38% | 1.91% | 421,923 | 295,273 | 13,967 |
| Maryland | 10 | 0 | 2,631,596 | 1 | 2 | 669,605 | 25.44% | 61.92% | 36.47% | 1.61% | 1,629,467 | 959,862 | 42,267 |
| Massachusetts | 12 | 0 | 3,081,069 | 1 | 2 | 795,244 | 25.81% | 61.80% | 35.99% | 2.21% | 1,904,098 | 1,108,854 | 68,117 |
| Michigan | 17 | 0 | 5,010,299 | 1 | 2 | 823,940 | 16.44% | 57.33% | 40.89% | 1.78% | 2,872,579 | 2,048,639 | 89,081 |
| Minnesota | 10 | 0 | 2,910,369 | 1 | 2 | 297,945 | 10.24% | 54.06% | 43.82% | 2.12% | 1,573,354 | 1,275,409 | 61,606 |
| Mississippi | 0 | 6 | 1,289,939 | 2 | 1 | 169,935 | 13.17% | 43.00% | 56.17% | 0.83% | 554,662 | 724,597 | 10,680 |
| Missouri | 0 | 11 | 2,929,111 | 2 | 1 | 3,903 | 0.13% | 49.23% | 49.36% | 1.41% | 1,441,911 | 1,445,814 | 41,386 |
| Montana | 0 | 3 | 492,750 | 2 | 1 | 11,723 | 2.38% | 47.11% | 49.49% | 3.39% | 232,159 | 243,882 | 16,709 |
| Nebraska | 1 | 4 | 801,281 | 2 | 1 | 119,660 | 14.93% | 41.60% | 56.53% | 1.87% | 333,319 | 452,979 | 14,983 |
| Nevada | 5 | 0 | 967,848 | 1 | 2 | 120,909 | 12.49% | 55.15% | 42.65% | 2.20% | 533,736 | 412,827 | 21,285 |
| New Hampshire | 4 | 0 | 710,970 | 1 | 2 | 68,292 | 9.61% | 54.13% | 44.52% | 1.35% | 384,826 | 316,534 | 9,610 |
| New Jersey | 15 | 0 | 3,877,407 | 1 | 2 | 602,215 | 15.53% | 57.14% | 41.61% | 1.26% | 2,215,422 | 1,613,207 | 48,778 |
| New Mexico | 5 | 0 | 830,158 | 1 | 2 | 125,590 | 15.13% | 56.91% | 41.78% | 1.31% | 472,422 | 346,832 | 10,904 |
| New York | 31 | 0 | 7,640,948 | 1 | 2 | 2,052,174 | 26.86% | 62.88% | 36.03% | 1.09% | 4,804,945 | 2,752,771 | 83,232 |
| North Carolina | 15 | 0 | 4,310,789 | 1 | 2 | 14,177 | 0.33% | 49.70% | 49.38% | 0.92% | 2,142,651 | 2,128,474 | 39,664 |
| North Dakota | 0 | 3 | 317,738 | 2 | 1 | 27,484 | 8.65% | 44.50% | 53.15% | 2.34% | 141,403 | 168,887 | 7,448 |
| Ohio | 20 | 0 | 5,721,815 | 1 | 2 | 262,224 | 4.58% | 51.38% | 46.80% | 1.82% | 2,940,044 | 2,677,820 | 103,951 |
| Oklahoma | 0 | 7 | 1,462,661 | 2 | 1 | 457,669 | 31.29% | 34.35% | 65.65% | 0.00% | 502,496 | 960,165 | 0 |
| Oregon | 7 | 0 | 1,827,864 | 1 | 2 | 298,816 | 16.35% | 56.75% | 40.40% | 2.85% | 1,037,291 | 738,475 | 52,098 |
| Pennsylvania | 21 | 0 | 6,015,476 | 1 | 2 | 620,478 | 10.31% | 54.47% | 44.15% | 1.38% | 3,276,363 | 2,655,885 | 83,228 |
| Rhode Island | 4 | 0 | 471,766 | 1 | 2 | 131,180 | 27.81% | 62.86% | 35.06% | 2.08% | 296,571 | 165,391 | 9,804 |
| South Carolina | 0 | 8 | 1,920,969 | 2 | 1 | 172,447 | 8.98% | 44.90% | 53.87% | 1.23% | 862,449 | 1,034,896 | 23,624 |
| South Dakota | 0 | 3 | 381,975 | 2 | 1 | 32,130 | 8.41% | 44.75% | 53.16% | 2.09% | 170,924 | 203,054 | 7,997 |
| Tennessee | 0 | 11 | 2,601,982 | 2 | 1 | 391,741 | 15.06% | 41.79% | 56.85% | 1.36% | 1,087,437 | 1,479,178 | 35,367 |
| Texas | 0 | 34 | 8,087,402 | 2 | 1 | 950,695 | 11.76% | 43.63% | 55.39% | 0.98% | 3,528,633 | 4,479,328 | 79,441 |
| Utah | 0 | 5 | 957,590 | 2 | 1 | 268,360 | 28.02% | 34.22% | 62.24% | 3.54% | 327,670 | 596,030 | 33,890 |
| Vermont | 3 | 0 | 325,046 | 1 | 2 | 120,288 | 37.01% | 67.46% | 30.45% | 2.10% | 219,262 | 98,974 | 6,810 |
| Virginia | 13 | 0 | 3,723,260 | 1 | 2 | 234,527 | 6.30% | 52.63% | 46.33% | 1.04% | 1,959,532 | 1,725,005 | 38,723 |
| Washington | 11 | 0 | 3,053,254 | 1 | 2 | 521,632 | 17.08% | 57.34% | 40.26% | 2.40% | 1,750,848 | 1,229,216 | 73,190 |
| West Virginia | 0 | 5 | 714,868 | 2 | 1 | 93,609 | 13.09% | 42.51% | 55.60% | 1.89% | 303,857 | 397,466 | 13,545 |
| Wisconsin | 10 | 0 | 2,983,417 | 1 | 2 | 414,818 | 13.90% | 56.22% | 42.31% | 1.47% | 1,677,211 | 1,262,393 | 43,813 |
| Wyoming | 0 | 3 | 254,658 | 2 | 1 | 82,090 | 32.24% | 32.54% | 64.78% | 2.68% | 82,868 | 164,958 | 6,832 |
| Total | 365 | 173 | 131,463,122 | 1 | 2 | 9,549,105 | 7.26% | 52.87% | 45.60% | 1.53% | 69,499,428 | 59,950,323 | 2,013,371 |
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