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The 1970 United States Senate election in Arizona took place on November 3, 1970. Incumbent Republican U.S. Senator Paul Fannin decided to run for reelection to a second term, running unopposed in the Republican primary. Fannin defeated Democratic nominee Sam Grossman in the general election. This was the last time until 1994 that Republicans won Arizona's Class 1 Senate Seat.
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Sam Grossman | 78,006 | 65.2% | |
| Democratic | John Kruglick | 27,324 | 22.9% | |
| Democratic | H. L. Kelly | 14,238 | 11.9% | |
| Total votes | 119,568 | 100.0 | ||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Republican | Paul Fannin (incumbent) | 228,284 | 55.98% | +4.55% | |
| Democratic | Sam Grossman | 179,512 | 44.02% | −4.55% | |
| Majority | 48,772 | 11.96% | +9.11% | ||
| Turnout | 407,796 | ||||
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See also: Political party strength in Arizona | |||||
