| Election Name: | 1970 Arizona gubernatorial election |
| Country: | Arizona |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1968 Arizona gubernatorial election |
| Previous Year: | 1968 |
| Next Election: | 1974 Arizona gubernatorial election |
| Next Year: | 1974 |
| Election Date: | November 3, 1970 |
| Image1: | Jack Williams (Arizona politician) (cropped).jpg |
| Image Upright: | 0.6 |
| Nominee1: | Jack Williams |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 209,355 |
| Percentage1: | 50.9% |
| Nominee2: | Raúl Héctor Castro |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 202,053 |
| Percentage2: | 49.1% |
| Map Size: | 210px |
| Governor | |
| Before Election: | Jack Williams |
| Before Party: | Republican Party (United States) |
| After Election: | Jack Williams |
| After Party: | Republican Party (United States) |
The 1970 Arizona gubernatorial election took place on November 3, 1970. Incumbent Governor Jack Williams ran for reelection to a third term as governor. United States Ambassador to Bolivia Raúl Héctor Castro won the Democratic nomination, and narrowly lost the general election to Williams by 1.78%. Williams was sworn into his third and final term as Governor on January 5, 1971.
Due to a constitutional amendment approved by the voters in 1968, the length of the term of Governor of Arizona was changed from two years to four years, effective with the 1970 gubernatorial election. Thus, Williams became the first Governor of Arizona to serve a 4-year term.[1]
| County | Jack Williams Republican | Raúl Héctor Castro Democratic | Margin | Total votes cast | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | % | % | |||||||||||||
| Apache | 1,745 | 50.89% | 1,684 | 49.11% | 61 | 1.78% | 3,429 | ||||||||
| Cochise | 5,712 | 41.24% | 8,138 | 58.76% | -2,426 | -17.52% | 13,850 | ||||||||
| Coconino | 4,305 | 49.05% | 4,471 | 50.95% | -166 | -1.89% | 8,776 | ||||||||
| Gila | 2,951 | 37.55% | 4,907 | 62.45% | -1,956 | -24.89% | 7,858 | ||||||||
| Graham | 2,078 | 47.00% | 2,343 | 53.00% | -265 | -5.99% | 4,421 | ||||||||
| Greenlee | 822 | 26.85% | 2,239 | 73.15% | -1,417 | -46.29% | 3,061 | ||||||||
| Maricopa | 133,336 | 58.01% | 96,525 | 41.99% | 36,811 | 16.01% | 229,861 | ||||||||
| Mohave | 2,846 | 50.43% | 2,797 | 49.57% | 49 | 0.87% | 5,643 | ||||||||
| Navajo | 4,335 | 56.56% | 3,330 | 43.44% | 1,005 | 13.11% | 7,665 | ||||||||
| Pima | 32,750 | 37.22% | 55,245 | 62.78% | -22,495 | -25.56% | 87,995 | ||||||||
| Pinal | 5,786 | 42.40% | 7,861 | 57.60% | -2,075 | -15.20% | 13,647 | ||||||||
| Santa Cruz | 824 | 27.96% | 2,123 | 72.04% | -1,299 | -44.08% | 2,947 | ||||||||
| Yavapai | 7,052 | 63.28% | 4,093 | 36.72% | 2,959 | 26.55% | 11,145 | ||||||||
| Yuma | 4,814 | 43.33% | 6,297 | 56.67% | -1,483 | -13.35% | 11,111 | ||||||||
| Totals | 209,356 | 50.89% | 202,053 | 49.11% | 7,303 | 1.78% | 411,409 | ||||||||