# 1940 United States presidential election in Idaho

"none" is preferred when the title is sufficiently descriptive; see [[WP:SDNONE]]
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vte :
The 1940 United States presidential election in Idaho took place on November 5, 1940, as part of the 1940 United States presidential election. State voters chose four representatives, or electors, to the Electoral College, who voted for president and vice president.
Idaho was won by incumbent President Franklin D. Roosevelt (D–New York), running with Secretary of Agriculture Henry A. Wallace, with 54.36% of the popular vote, against Wendell Willkie (R–New York), running with Minority Leader Charles L. McNary, with 45.31% of the popular vote.
As of the 2024 presidential election, this is the last occasion when Cassia County, Lemhi County and Owyhee County have voted for a Democratic presidential candidate.

## Results

1940 United States presidential election in Idaho :
| Party | Party | Candidate | Votes | % |
| | Democratic | Franklin D. Roosevelt (inc.) | 127,842 | 54.36% |
| | Republican | Wendell Willkie | 106,553 | 45.31% |
| | Write-in | | 773 | 0.33% |
| Total votes | Total votes | Total votes | 235,168 | 100% |

### Results by county

| County | Franklin Delano Roosevelt Democratic | Franklin Delano Roosevelt Democratic | Wendell Lewis Willkie Republican | Wendell Lewis Willkie Republican | Various candidates Write-ins | Various candidates Write-ins | Margin | Margin | Total votes cast |
| County | # | % | # | % | # | % | # | % | Total votes cast |
| Ada | 12,381 | 48.95% | 12,861 | 50.85% | 51 | 0.20% | -480 | -1.90% | 25,293 |
| Adams | 929 | 54.30% | 779 | 45.53% | 3 | 0.18% | 150 | 8.77% | 1,711 |
| Bannock | 10,493 | 65.94% | 5,419 | 34.05% | 1 | 0.01% | 5,074 | 31.89% | 15,913 |
| Bear Lake | 2,026 | 53.50% | 1,761 | 46.50% | | | 265 | 7.00% | 3,787 |
| Benewah | 1,924 | 59.20% | 1,304 | 40.12% | 22 | 0.68% | 620 | 19.08% | 3,250 |
| Bingham | 3,815 | 50.95% | 3,662 | 48.90% | 11 | 0.15% | 153 | 2.04% | 7,488 |
| Blaine | 1,559 | 58.02% | 1,124 | 41.83% | 4 | 0.15% | 435 | 16.19% | 2,687 |
| Boise | 677 | 58.01% | 489 | 41.90% | 1 | 0.09% | 188 | 16.11% | 1,167 |
| Bonner | 3,834 | 55.24% | 3,072 | 44.27% | 34 | 0.49% | 762 | 10.98% | 6,940 |
| Bonneville | 5,891 | 59.51% | 3,999 | 40.39% | 10 | 0.10% | 1,892 | 19.11% | 9,900 |
| Boundary | 1,393 | 51.90% | 1,221 | 45.49% | 70 | 2.61% | 172 | 6.41% | 2,684 |
| Butte | 448 | 51.44% | 423 | 48.56% | | | 25 | 2.87% | 871 |
| Camas | 381 | 50.94% | 367 | 49.06% | | | 14 | 1.87% | 748 |
| Canyon | 8,639 | 49.43% | 8,776 | 50.21% | 63 | 0.36% | -137 | -0.78% | 17,478 |
| Caribou | 658 | 62.73% | 390 | 37.18% | 1 | 0.10% | 268 | 25.55% | 1,049 |
| Cassia | 2,930 | 51.50% | 2,748 | 48.30% | 11 | 0.19% | 182 | 3.20% | 5,689 |
| Clark | 212 | 34.70% | 399 | 65.30% | | | -187 | -30.61% | 611 |
| Clearwater | 2,284 | 66.61% | 1,128 | 32.90% | 17 | 0.50% | 1,156 | 33.71% | 3,429 |
| Custer | 894 | 53.89% | 760 | 45.81% | 5 | 0.30% | 134 | 8.08% | 1,659 |
| Elmore | 1,632 | 60.15% | 1,077 | 39.70% | 4 | 0.15% | 555 | 20.46% | 2,713 |
| Franklin | 2,158 | 51.05% | 2,069 | 48.95% | | | 89 | 2.11% | 4,227 |
| Fremont | 2,556 | 56.13% | 1,996 | 43.83% | 2 | 0.04% | 560 | 12.30% | 4,554 |
| Gem | 2,666 | 64.52% | 1,462 | 35.38% | 4 | 0.10% | 1,204 | 29.14% | 4,132 |
| Gooding | 1,919 | 44.89% | 2,352 | 55.02% | 4 | 0.09% | -433 | -10.13% | 4,275 |
| Idaho | 2,888 | 52.08% | 2,641 | 47.63% | 16 | 0.29% | 247 | 4.45% | 5,545 |
| Jefferson | 2,631 | 60.29% | 1,717 | 39.34% | 16 | 0.37% | 914 | 20.94% | 4,364 |
| Jerome | 1,881 | 42.67% | 2,520 | 57.17% | 7 | 0.16% | -639 | -14.50% | 4,408 |
| Kootenai | 5,997 | 57.32% | 4,333 | 41.42% | 132 | 1.26% | 1,664 | 15.91% | 10,462 |
| Latah | 4,494 | 52.87% | 3,971 | 46.72% | 35 | 0.41% | 523 | 6.15% | 8,500 |
| Lemhi | 1,664 | 54.08% | 1,412 | 45.89% | 1 | 0.03% | 252 | 8.19% | 3,077 |
| Lewis | 1,462 | 66.52% | 729 | 33.17% | 7 | 0.32% | 733 | 33.35% | 2,198 |
| Lincoln | 886 | 46.58% | 1,009 | 53.05% | 7 | 0.37% | -123 | -6.47% | 1,902 |
| Madison | 2,218 | 57.60% | 1,632 | 42.38% | 1 | 0.03% | 586 | 15.22% | 3,851 |
| Minidoka | 1,982 | 49.87% | 1,979 | 49.80% | 13 | 0.33% | 3 | 0.08% | 3,974 |
| Nez Perce | 5,963 | 63.35% | 3,409 | 36.22% | 41 | 0.44% | 2,554 | 27.13% | 9,413 |
| Oneida | 1,440 | 55.73% | 1,140 | 44.12% | 4 | 0.15% | 300 | 11.61% | 2,584 |
| Owyhee | 1,160 | 52.61% | 1,031 | 46.76% | 14 | 0.63% | 129 | 5.85% | 2,205 |
| Payette | 1,790 | 41.02% | 2,554 | 58.52% | 20 | 0.46% | -764 | -17.51% | 4,364 |
| Power | 931 | 49.39% | 951 | 50.45% | 3 | 0.16% | -20 | -1.06% | 1,885 |
| Shoshone | 6,565 | 64.54% | 3,525 | 34.65% | 82 | 0.81% | 3,040 | 29.89% | 10,172 |
| Teton | 844 | 55.86% | 667 | 44.14% | | | 177 | 11.71% | 1,511 |
| Twin Falls | 7,286 | 44.56% | 9,031 | 55.23% | 34 | 0.21% | -1,745 | -10.67% | 16,351 |
| Valley | 1,165 | 59.96% | 761 | 39.17% | 17 | 0.87% | 404 | 20.79% | 1,943 |
| Washington | 2,296 | 54.61% | 1,903 | 45.27% | 5 | 0.12% | 393 | 9.35% | 4,204 |
| Totals | 127,842 | 54.36% | 106,553 | 45.31% | 773 | 0.33% | 21,289 | 9.05% | 235,168 |

#### Counties that flipped from Democratic to Republican

* Ada
* Canyon
* Gooding
* Jerome
* Lincoln
* Payette
* Power
* Twins Falls