| Election Name: | 1940 Arizona gubernatorial election |
| Country: | Arizona |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1938 Arizona gubernatorial election |
| Previous Year: | 1938 |
| Next Election: | 1942 Arizona gubernatorial election |
| Next Year: | 1942 |
| Election Date: | November 5, 1940 |
| Image1: | Sidney Preston Osborn.jpg |
| Image Upright: | 0.6 |
| Nominee1: | Sidney Preston Osborn |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 97,606 |
| Percentage1: | 65.52% |
| Nominee2: | Jerrie W. Lee |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 50,358 |
| Percentage2: | 33.81% |
| Map Size: | 205px |
| Governor | |
| Before Election: | Robert Taylor Jones |
| Before Party: | Democratic Party (United States) |
| After Election: | Sidney Preston Osborn |
| After Party: | Democratic Party (United States) |
The 1940 Arizona gubernatorial election took place on November 5, 1940. Incumbent Governor Robert Taylor Jones ran for reelection but was defeated in the Democratic primary by former Secretary of State Sidney Preston Osborn, whom Jones had previously defeated in 1938.
Sidney Preston Osborn defeated Jerrie W. Lee in the general election, and was sworn into his first term as Governor on January 6, 1941, becoming Arizona's seventh Governor.
The Democratic primary took place on September 10, 1940. Incumbent Governor Robert Taylor Jones ran for reelection, but he was defeated by former Secretary of State Sidney Preston Osborn. Osborn previously ran against Jones in 1938, but was defeated due to the race being a three-way with Secretary of State James H. Kerby. C. M. Menderson, Ernest Carleton, George E. Shields, and Howard Sprouse also ran but presented only token opposition.[1]
| County | Sidney P. Osborn Democratic | Jerrie W. Lee Republican | Charles R. Osburn Prohibition | Margin | Total votes cast | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | % | % | % | ||||||||||||||||
| Apache | 2,180 | 75.85% | 691 | 24.04% | 3 | 0.10% | 1,489 | 51.81% | 2,874 | ||||||||||
| Cochise | 9,007 | 75.97% | 2,806 | 23.67% | 43 | 0.36% | 6,201 | 52.30% | 11,856 | ||||||||||
| Coconino | 3,264 | 66.98% | 1,591 | 32.65% | 18 | 0.37% | 1,673 | 34.33% | 4,873 | ||||||||||
| Gila | 5,885 | 70.29% | 2,453 | 29.30% | 34 | 0.41% | 3,432 | 40.99% | 8,372 | ||||||||||
| Graham | 3,076 | 71.40% | 1,200 | 27.86% | 32 | 0.74% | 1,876 | 43.55% | 4,308 | ||||||||||
| Greenlee | 2,324 | 84.39% | 419 | 15.21% | 11 | 0.40% | 1,905 | 69.17% | 2,754 | ||||||||||
| Maricopa | 33,883 | 58.64% | 23,408 | 40.51% | 488 | 0.84% | 10,475 | 18.13% | 57,779 | ||||||||||
| Mohave | 2,292 | 73.41% | 816 | 26.14% | 14 | 0.45% | 1,476 | 47.28% | 3,122 | ||||||||||
| Navajo | 3,252 | 71.61% | 1,271 | 27.99% | 18 | 0.40% | 1,981 | 43.62% | 4,541 | ||||||||||
| Pima | 15,288 | 65.43% | 7,916 | 33.88% | 163 | 0.70% | 7,372 | 31.55% | 23,367 | ||||||||||
| Pinal | 4,525 | 70.64% | 1,861 | 29.05% | 20 | 0.31% | 2,664 | 41.59% | 6,406 | ||||||||||
| Santa Cruz | 1,928 | 75.73% | 613 | 24.08% | 5 | 0.20% | 1,315 | 51.65% | 2,546 | ||||||||||
| Yavapai | 6,288 | 62.02% | 3,731 | 36.80% | 120 | 1.18% | 2,557 | 25.22% | 10,139 | ||||||||||
| Yuma | 4,414 | 73.20% | 1,582 | 26.24% | 34 | 0.56% | 2,832 | 46.97% | 6,030 | ||||||||||
| Totals | 97,606 | 65.52% | 50,358 | 33.80% | 1,003 | 0.67% | 47,248 | 31.72% | 148,967 | ||||||||||