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County results Hoffman: 50–60% 60–70% 70–80% | |||||||||||||||||
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The2018 Arizona Superintendent of Public Instruction election took place on November 6, 2018, to elect theArizona Superintendent of Public Instruction, concurrently with theelection of Arizona'sClass I U.S. Senate seat, as well asother elections to the United States Senate in other states andelections to theUnited States House of Representatives and variousstate and local elections.
Federal officials
State and local officials
Individuals
Individuals[11]

| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Frank Riggs | 124,872 | 21.82% | |
| Republican | Bob Branch | 124,623 | 21.78% | |
| Republican | Diane Douglas (incumbent) | 121,452 | 21.22% | |
| Republican | Tracy Livingston | 115,778 | 20.23% | |
| Republican | Jonathan Gelbart | 85,511 | 14.94% | |
| Total votes | 572,236 | 100.0% | ||

| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Kathy Hoffman | 254,566 | 52.27% | |
| Democratic | David Schapira | 232,419 | 47.73% | |
| Total votes | 486,985 | 100.0% | ||
| Poll source | Date(s) administered | Sample size | Margin of error | Frank Riggs (R) | Kathy Hoffman (D) | Undecided |
|---|---|---|---|---|---|---|
| OH Predictive Insights[14] | September 5–6, 2018 | 597 (LV) | ± 4.0% | 41% | 39% | 20% |
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Kathy Hoffman | 1,185,457 | 51.56% | +2.11% | |
| Republican | Frank Riggs | 1,113,781 | 48.44% | −2.11% | |
| Write-in | 89 | 0.0% | N/A | ||
| Total votes | 2,299,327 | 100.0% | |||
| Democraticgain fromRepublican | |||||
Official Superintendent of Public Instruction campaign websites