# 1948 United States presidential election in Iowa

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The 1948 United States presidential election in Iowa took place on November 2, 1948, as part of the 1948 United States presidential election. Iowa voters chose ten representatives, or electors, to the Electoral College, who voted for president and vice president.
Iowa was won by incumbent Democratic President Harry S. Truman of neighbouring Missouri, running with Senator Alben W. Barkley, with 50.31% of the popular vote, against Governor Thomas E. Dewey (R–New York), running with Governor Earl Warren, with 47.58% of the popular vote.
Defying the expectations of a Dewey sweep in a state he won four years earlier, in an unexpected twist, Truman would manage to flip the state from Republican to Democratic, a swing of roughly 6%.

## Results

1948 United States presidential election in Iowa :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry S. Truman (inc.) | 522,380 | 50.31% |
| | Republican | Thomas E. Dewey | 494,018 | 47.58% |
| | Progressive Party (United States, 1948–1955) | Henry A. Wallace | 12,125 | 1.17% |
| | Socialist Labor | Edward A. Teichert | 4,274 | 0.41% |
| | Prohibition | Claude A. Watson | 3,382 | 0.33% |
| | Write-in | | 2,093 | 0.20% |
| Total votes | Total votes | Total votes | 1,038,272 | 100% |

### Results by county

| County | Harry S. Truman Democratic | Harry S. Truman Democratic | Thomas E. Dewey Republican | Thomas E. Dewey Republican | Henry A. Wallace Progressive | Henry A. Wallace Progressive | Edward A. Teichert Socialist Labor | Edward A. Teichert Socialist Labor | Claude A. Watson Prohibition | Claude A. Watson Prohibition | Various candidates Other parties | Various candidates Other parties | Margin | Margin | Total votes cast |
| County | # | % | # | % | # | % | # | % | # | % | # | % | # | % | Total votes cast |
| Adair | 2,567 | 46.48% | 2,879 | 52.13% | 58 | 1.05% | 2 | 0.04% | 16 | 0.29% | 1 | 0.02% | -312 | -5.65% | 5,523 |
| Adams | 1,817 | 45.29% | 2,142 | 53.39% | 23 | 0.57% | 4 | 0.10% | 25 | 0.62% | 1 | 0.02% | -325 | -8.10% | 4,012 |
| Allamakee | 3,172 | 41.06% | 4,474 | 57.91% | 58 | 0.75% | 10 | 0.13% | 5 | 0.06% | 7 | 0.09% | -1,302 | -16.85% | 7,726 |
| Appanoose | 4,998 | 53.77% | 4,078 | 43.87% | 111 | 1.19% | 17 | 0.18% | 81 | 0.87% | 11 | 0.12% | 920 | 9.90% | 9,296 |
| Audubon | 2,840 | 55.11% | 2,177 | 42.25% | 114 | 2.21% | 6 | 0.12% | 10 | 0.19% | 6 | 0.12% | 663 | 12.86% | 5,153 |
| Benton | 4,209 | 50.30% | 3,770 | 45.06% | 116 | 1.39% | 233 | 2.78% | 21 | 0.25% | 18 | 0.22% | 439 | 5.24% | 8,367 |
| Black Hawk | 19,603 | 54.11% | 16,041 | 44.28% | 282 | 0.78% | 123 | 0.34% | 91 | 0.25% | 90 | 0.25% | 3,562 | 9.83% | 36,230 |
| Boone | 5,541 | 54.21% | 4,183 | 40.92% | 242 | 2.37% | 168 | 1.64% | 71 | 0.69% | 17 | 0.17% | 1,358 | 13.29% | 10,222 |
| Bremer | 3,502 | 47.11% | 3,837 | 51.62% | 50 | 0.67% | 12 | 0.16% | 13 | 0.17% | 19 | 0.26% | -335 | -4.51% | 7,433 |
| Buchanan | 4,127 | 48.42% | 4,310 | 50.57% | 59 | 0.69% | 10 | 0.12% | 11 | 0.13% | 6 | 0.07% | -183 | -2.15% | 8,523 |
| Buena Vista | 4,340 | 51.10% | 3,959 | 46.61% | 161 | 1.90% | 20 | 0.24% | 13 | 0.15% | 0 | 0.00% | 381 | 4.49% | 8,493 |
| Butler | 3,008 | 46.18% | 3,380 | 51.90% | 101 | 1.55% | 4 | 0.06% | 9 | 0.14% | 11 | 0.17% | -372 | -5.72% | 6,513 |
| Calhoun | 3,164 | 49.45% | 3,083 | 48.19% | 114 | 1.78% | 6 | 0.09% | 19 | 0.30% | 12 | 0.19% | 81 | 1.26% | 6,398 |
| Carroll | 5,711 | 58.36% | 3,974 | 40.61% | 78 | 0.80% | 4 | 0.04% | 13 | 0.13% | 6 | 0.06% | 1,737 | 17.75% | 9,786 |
| Cass | 3,372 | 39.40% | 5,106 | 59.66% | 60 | 0.70% | 7 | 0.08% | 9 | 0.11% | 5 | 0.06% | -1,734 | -20.26% | 8,559 |
| Cedar | 2,958 | 42.16% | 3,957 | 56.40% | 73 | 1.04% | 3 | 0.04% | 14 | 0.20% | 11 | 0.16% | -999 | -14.24% | 7,016 |
| Cerro Gordo | 9,544 | 53.98% | 7,840 | 44.34% | 202 | 1.14% | 4 | 0.02% | 67 | 0.38% | 25 | 0.14% | 1,704 | 9.64% | 17,682 |
| Cherokee | 3,739 | 52.34% | 3,318 | 46.44% | 61 | 0.85% | 1 | 0.01% | 20 | 0.28% | 5 | 0.07% | 421 | 5.90% | 7,144 |
| Chickasaw | 4,071 | 53.64% | 3,449 | 45.45% | 57 | 0.75% | 6 | 0.08% | 2 | 0.03% | 4 | 0.05% | 622 | 8.19% | 7,589 |
| Clarke | 2,101 | 47.98% | 2,195 | 50.13% | 48 | 1.10% | 9 | 0.21% | 18 | 0.41% | 8 | 0.18% | -94 | -2.15% | 4,379 |
| Clay | 3,649 | 52.42% | 3,036 | 43.61% | 150 | 2.15% | 89 | 1.28% | 22 | 0.32% | 15 | 0.22% | 613 | 8.81% | 6,961 |
| Clayton | 4,857 | 48.04% | 5,151 | 50.94% | 79 | 0.78% | 9 | 0.09% | 10 | 0.10% | 5 | 0.05% | -294 | -2.90% | 10,111 |
| Clinton | 8,534 | 45.72% | 9,859 | 52.82% | 169 | 0.91% | 38 | 0.20% | 33 | 0.18% | 32 | 0.17% | -1,325 | -7.10% | 18,665 |
| Crawford | 3,983 | 53.21% | 3,267 | 43.65% | 137 | 1.83% | 74 | 0.99% | 15 | 0.20% | 9 | 0.12% | 716 | 9.56% | 7,485 |
| Dallas | 5,661 | 52.32% | 4,810 | 44.46% | 173 | 1.60% | 85 | 0.79% | 76 | 0.70% | 14 | 0.13% | 851 | 7.86% | 10,819 |
| Davis | 2,982 | 56.21% | 2,276 | 42.90% | 20 | 0.38% | 9 | 0.17% | 15 | 0.28% | 3 | 0.06% | 706 | 13.31% | 5,305 |
| Decatur | 3,172 | 54.66% | 2,547 | 43.89% | 62 | 1.07% | 4 | 0.07% | 18 | 0.31% | 0 | 0.00% | 625 | 10.77% | 5,803 |
| Delaware | 2,876 | 38.36% | 4,555 | 60.75% | 53 | 0.71% | 3 | 0.04% | 7 | 0.09% | 4 | 0.05% | -1,679 | -22.39% | 7,498 |
| Des Moines | 8,792 | 52.56% | 7,621 | 45.56% | 191 | 1.14% | 9 | 0.05% | 52 | 0.31% | 64 | 0.38% | 1,171 | 7.00% | 16,729 |
| Dickinson | 2,324 | 48.76% | 2,304 | 48.34% | 43 | 0.90% | 67 | 1.41% | 14 | 0.29% | 14 | 0.29% | 20 | 0.42% | 4,766 |
| Dubuque | 15,521 | 59.90% | 10,111 | 39.02% | 190 | 0.73% | 13 | 0.05% | 4 | 0.02% | 74 | 0.29% | 5,410 | 20.88% | 25,913 |
| Emmet | 2,752 | 51.80% | 2,464 | 46.38% | 49 | 0.92% | 8 | 0.15% | 35 | 0.66% | 5 | 0.09% | 288 | 5.42% | 5,313 |
| Fayette | 5,303 | 45.09% | 6,296 | 53.54% | 113 | 0.96% | 3 | 0.03% | 30 | 0.26% | 15 | 0.13% | -993 | -8.45% | 11,760 |
| Floyd | 3,688 | 43.40% | 4,644 | 54.65% | 125 | 1.47% | 2 | 0.02% | 28 | 0.33% | 10 | 0.12% | -956 | -11.25% | 8,497 |
| Franklin | 2,871 | 47.68% | 2,716 | 45.11% | 169 | 2.81% | 216 | 3.59% | 29 | 0.48% | 20 | 0.33% | 155 | 2.57% | 6,021 |
| Fremont | 2,637 | 49.03% | 2,698 | 50.17% | 15 | 0.28% | 2 | 0.04% | 19 | 0.35% | 7 | 0.13% | -61 | -1.14% | 5,378 |
| Greene | 2,946 | 46.84% | 3,059 | 48.63% | 100 | 1.59% | 138 | 2.19% | 31 | 0.49% | 16 | 0.25% | -113 | -1.79% | 6,290 |
| Grundy | 2,344 | 41.51% | 3,154 | 55.85% | 106 | 1.88% | 4 | 0.07% | 33 | 0.58% | 6 | 0.11% | -810 | -14.34% | 5,647 |
| Guthrie | 3,392 | 49.22% | 3,389 | 49.18% | 76 | 1.10% | 4 | 0.06% | 28 | 0.41% | 2 | 0.03% | 3 | 0.04% | 6,891 |
| Hamilton | 3,613 | 49.19% | 3,535 | 48.13% | 153 | 2.08% | 13 | 0.18% | 16 | 0.22% | 15 | 0.20% | 78 | 1.06% | 7,345 |
| Hancock | 3,096 | 51.17% | 2,802 | 46.31% | 126 | 2.08% | 7 | 0.12% | 17 | 0.28% | 3 | 0.05% | 294 | 4.86% | 6,051 |
| Hardin | 4,023 | 45.44% | 4,553 | 51.42% | 219 | 2.47% | 9 | 0.10% | 22 | 0.25% | 28 | 0.32% | -530 | -5.98% | 8,854 |
| Harrison | 4,608 | 51.11% | 4,341 | 48.15% | 44 | 0.49% | 12 | 0.13% | 8 | 0.09% | 3 | 0.03% | 267 | 2.96% | 9,016 |
| Henry | 3,042 | 38.98% | 4,620 | 59.19% | 61 | 0.78% | 3 | 0.04% | 64 | 0.82% | 15 | 0.19% | -1,578 | -20.21% | 7,805 |
| Howard | 3,378 | 55.47% | 2,630 | 43.19% | 51 | 0.84% | 2 | 0.03% | 22 | 0.36% | 7 | 0.11% | 748 | 12.28% | 6,090 |
| Humboldt | 2,855 | 52.56% | 2,498 | 45.99% | 66 | 1.22% | 3 | 0.06% | 7 | 0.13% | 3 | 0.06% | 357 | 6.57% | 5,432 |
| Ida | 2,365 | 50.34% | 2,257 | 48.04% | 44 | 0.94% | 1 | 0.02% | 26 | 0.55% | 5 | 0.11% | 108 | 2.30% | 4,698 |
| Iowa | 3,030 | 43.42% | 3,659 | 52.44% | 126 | 1.81% | 135 | 1.93% | 16 | 0.23% | 12 | 0.17% | -629 | -9.02% | 6,978 |
| Jackson | 3,263 | 46.58% | 3,597 | 51.35% | 79 | 1.13% | 49 | 0.70% | 7 | 0.10% | 10 | 0.14% | -334 | -4.77% | 7,005 |
| Jasper | 6,684 | 52.28% | 5,710 | 44.66% | 132 | 1.03% | 160 | 1.25% | 70 | 0.55% | 30 | 0.23% | 974 | 7.62% | 12,786 |
| Jefferson | 3,033 | 42.79% | 3,906 | 55.11% | 29 | 0.41% | 2 | 0.03% | 112 | 1.58% | 6 | 0.08% | -873 | -12.32% | 7,088 |
| Johnson | 8,611 | 52.82% | 7,139 | 43.79% | 359 | 2.20% | 36 | 0.22% | 33 | 0.20% | 125 | 0.77% | 1,472 | 9.03% | 16,303 |
| Jones | 3,915 | 47.04% | 4,290 | 51.55% | 99 | 1.19% | 10 | 0.12% | 5 | 0.06% | 3 | 0.04% | -375 | -4.51% | 8,322 |
| Keokuk | 4,118 | 48.59% | 4,201 | 49.57% | 89 | 1.05% | 9 | 0.11% | 51 | 0.60% | 7 | 0.08% | -83 | -0.98% | 8,475 |
| Kossuth | 6,039 | 58.33% | 4,186 | 40.43% | 112 | 1.08% | 4 | 0.04% | 7 | 0.07% | 5 | 0.05% | 1,853 | 17.90% | 10,353 |
| Lee | 9,201 | 53.46% | 7,801 | 45.32% | 103 | 0.60% | 28 | 0.16% | 61 | 0.35% | 18 | 0.10% | 1,400 | 8.14% | 17,212 |
| Linn | 20,995 | 48.71% | 20,881 | 48.45% | 668 | 1.55% | 226 | 0.52% | 196 | 0.45% | 132 | 0.31% | 114 | 0.26% | 43,098 |
| Louisa | 1,945 | 43.92% | 2,420 | 54.64% | 25 | 0.56% | 5 | 0.11% | 29 | 0.65% | 5 | 0.11% | -475 | -10.72% | 4,429 |
| Lucas | 2,697 | 49.26% | 2,656 | 48.51% | 57 | 1.04% | 2 | 0.04% | 53 | 0.97% | 10 | 0.18% | 41 | 0.75% | 5,475 |
| Lyon | 2,174 | 45.86% | 2,500 | 52.74% | 55 | 1.16% | 4 | 0.08% | 3 | 0.06% | 4 | 0.08% | -326 | -6.88% | 4,740 |
| Madison | 2,827 | 46.17% | 3,207 | 52.38% | 56 | 0.91% | 1 | 0.02% | 29 | 0.47% | 3 | 0.05% | -380 | -6.21% | 6,123 |
| Mahaska | 4,327 | 47.92% | 4,238 | 46.93% | 30 | 0.33% | 142 | 1.57% | 147 | 1.63% | 146 | 1.62% | 89 | 0.99% | 9,030 |
| Marion | 6,300 | 57.96% | 4,312 | 39.67% | 111 | 1.02% | 40 | 0.37% | 87 | 0.80% | 20 | 0.18% | 1,988 | 18.29% | 10,870 |
| Marshall | 5,602 | 43.65% | 6,698 | 52.19% | 134 | 1.04% | 265 | 2.06% | 100 | 0.78% | 34 | 0.26% | -1,096 | -8.54% | 12,833 |
| Mills | 2,155 | 42.20% | 2,921 | 57.20% | 13 | 0.25% | 16 | 0.31% | 2 | 0.04% | 0 | 0.00% | -766 | -15.00% | 5,107 |
| Mitchell | 2,873 | 46.95% | 3,021 | 49.37% | 169 | 2.76% | 7 | 0.11% | 44 | 0.72% | 5 | 0.08% | -148 | -2.42% | 6,119 |
| Monona | 4,098 | 55.79% | 3,179 | 43.28% | 52 | 0.71% | 6 | 0.08% | 5 | 0.07% | 6 | 0.08% | 919 | 12.51% | 7,346 |
| Monroe | 3,445 | 58.13% | 2,371 | 40.01% | 69 | 1.16% | 8 | 0.13% | 18 | 0.30% | 15 | 0.25% | 1,074 | 18.12% | 5,926 |
| Montgomery | 2,751 | 39.81% | 4,084 | 59.10% | 44 | 0.64% | 23 | 0.33% | 5 | 0.07% | 3 | 0.04% | -1,333 | -19.29% | 6,910 |
| Muscatine | 5,466 | 47.06% | 6,003 | 51.68% | 105 | 0.90% | 3 | 0.03% | 17 | 0.15% | 21 | 0.18% | -537 | -4.62% | 11,615 |
| O'Brien | 3,421 | 46.70% | 3,697 | 50.46% | 177 | 2.42% | 4 | 0.05% | 11 | 0.15% | 16 | 0.22% | -276 | -3.76% | 7,326 |
| Osceola | 2,123 | 53.90% | 1,772 | 44.99% | 36 | 0.91% | 3 | 0.08% | 1 | 0.03% | 4 | 0.10% | 351 | 8.91% | 3,939 |
| Page | 3,567 | 36.61% | 5,638 | 57.87% | 419 | 4.30% | 110 | 1.13% | 5 | 0.05% | 4 | 0.04% | -2,071 | -21.26% | 9,743 |
| Palo Alto | 3,858 | 58.45% | 2,594 | 39.30% | 120 | 1.82% | 11 | 0.17% | 11 | 0.17% | 7 | 0.11% | 1,264 | 19.15% | 6,601 |
| Plymouth | 4,339 | 46.08% | 5,002 | 53.12% | 43 | 0.46% | 4 | 0.04% | 25 | 0.27% | 3 | 0.03% | -663 | -7.04% | 9,416 |
| Pocahontas | 3,500 | 57.84% | 2,397 | 39.61% | 134 | 2.21% | 3 | 0.05% | 11 | 0.18% | 6 | 0.10% | 1,103 | 18.23% | 6,051 |
| Polk | 45,289 | 55.65% | 33,742 | 41.46% | 1,189 | 1.46% | 659 | 0.81% | 212 | 0.26% | 288 | 0.35% | 11,547 | 14.19% | 81,379 |
| Pottawattamie | 11,430 | 47.44% | 12,384 | 51.40% | 145 | 0.60% | 66 | 0.27% | 30 | 0.12% | 40 | 0.17% | -954 | -3.96% | 24,095 |
| Poweshiek | 4,324 | 51.57% | 3,888 | 46.37% | 68 | 0.81% | 17 | 0.20% | 35 | 0.42% | 53 | 0.63% | 436 | 5.20% | 8,385 |
| Ringgold | 1,922 | 43.10% | 2,487 | 55.77% | 28 | 0.63% | 22 | 0.49% | | 0.00% | 0 | 0.00% | -565 | -12.67% | 4,459 |
| Sac | 3,699 | 50.24% | 3,505 | 47.60% | 94 | 1.28% | 10 | 0.14% | 47 | 0.64% | 8 | 0.11% | 194 | 2.64% | 7,363 |
| Scott | 16,661 | 48.89% | 16,842 | 49.42% | 411 | 1.21% | 29 | 0.09% | 37 | 0.11% | 101 | 0.30% | -181 | -0.53% | 34,081 |
| Shelby | 3,499 | 50.45% | 3,301 | 47.60% | 76 | 1.10% | 47 | 0.68% | 7 | 0.10% | 5 | 0.07% | 198 | 2.85% | 6,935 |
| Sioux | 4,042 | 41.24% | 5,597 | 57.11% | 127 | 1.30% | 15 | 0.15% | 10 | 0.10% | 10 | 0.10% | -1,555 | -15.87% | 9,801 |
| Story | 6,152 | 40.34% | 8,307 | 54.47% | 283 | 1.86% | 364 | 2.39% | 75 | 0.49% | 70 | 0.46% | -2,155 | -14.13% | 15,251 |
| Tama | 5,115 | 51.01% | 4,763 | 47.50% | 123 | 1.23% | 11 | 0.11% | 8 | 0.08% | 8 | 0.08% | 352 | 3.51% | 10,028 |
| Taylor | 2,402 | 42.16% | 3,244 | 56.93% | 27 | 0.47% | 5 | 0.09% | 19 | 0.33% | 1 | 0.02% | -842 | -14.77% | 5,698 |
| Union | 3,218 | 43.40% | 4,138 | 55.81% | 33 | 0.45% | 6 | 0.08% | 14 | 0.19% | 5 | 0.07% | -920 | -12.41% | 7,414 |
| Van Buren | 1,917 | 40.89% | 2,702 | 57.64% | 38 | 0.81% | 1 | 0.02% | 29 | 0.62% | 1 | 0.02% | -785 | -16.75% | 4,688 |
| Wapello | 10,841 | 57.13% | 7,875 | 41.50% | 127 | 0.67% | 72 | 0.38% | 45 | 0.24% | 16 | 0.08% | 2,966 | 15.63% | 18,976 |
| Warren | 3,481 | 45.77% | 3,876 | 50.97% | 109 | 1.43% | 73 | 0.96% | 56 | 0.74% | 10 | 0.13% | -395 | -5.20% | 7,605 |
| Washington | 3,485 | 42.27% | 4,680 | 56.76% | 47 | 0.57% | 2 | 0.02% | 26 | 0.32% | 5 | 0.06% | -1,195 | -14.49% | 8,245 |
| Wayne | 3,314 | 54.12% | 2,738 | 44.72% | 31 | 0.51% | 4 | 0.07% | 33 | 0.54% | 3 | 0.05% | 576 | 9.40% | 6,123 |
| Webster | 9,508 | 55.71% | 6,951 | 40.73% | 359 | 2.10% | 168 | 0.98% | 34 | 0.20% | 46 | 0.27% | 2,557 | 14.98% | 17,066 |
| Winnebago | 2,626 | 48.17% | 2,636 | 48.36% | 136 | 2.49% | 18 | 0.33% | 27 | 0.50% | 8 | 0.15% | -10 | -0.19% | 5,451 |
| Winneshiek | 4,905 | 50.76% | 4,594 | 47.54% | 139 | 1.44% | 8 | 0.08% | 10 | 0.10% | 7 | 0.07% | 311 | 3.22% | 9,663 |
| Woodbury | 22,056 | 56.43% | 16,655 | 42.61% | 230 | 0.59% | 18 | 0.05% | 71 | 0.18% | 54 | 0.14% | 5,401 | 13.82% | 39,084 |
| Worth | 2,623 | 56.57% | 1,878 | 40.50% | 108 | 2.33% | 6 | 0.13% | 18 | 0.39% | 4 | 0.09% | 745 | 16.07% | 4,637 |
| Wright | 3,866 | 49.56% | 3,810 | 48.85% | 78 | 1.00% | 20 | 0.26% | 21 | 0.27% | 5 | 0.06% | 56 | 0.71% | 7,800 |
| Total | 522,380 | 50.31% | 494,018 | 47.58% | 12,125 | 1.17% | 4,274 | 0.41% | 3,382 | 0.33% | 2,093 | 0.20% | 28,362 | 2.73% | 1,038,272 |

#### Counties that flipped from Democratic to Republican

* Scott

#### Counties that flipped from Republican to Democratic

* Carroll
* Cherokee
* Chickasaw
* Crawford
* Dallas
* Des Moines
* Emmet
* Franklin
* Guthrie
* Hancock
* Harrison
* Ida
* Lee
* Linn
* Lucas
* Mahaska
* Osceola
* Sac
* Shelby
* Wayne
* Winneshiek