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County results Taft: 40–50% 50–60% 60–70% Metzenbaum: 40–50% 50–60% | |||||||||||||||||
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The1970 United States Senate election in Ohio took place on November 3, 1970. Incumbent Democratic SenatorStephen M. Young did not run for re-election to a third term in office. U.S. RepresentativeRobert Taft Jr. won the open seat over Democrat Howard Metzenbaum.
Primary elections were held on May 5. Both Taft and Metzenbaum won very competitive primaries to gain their parties' nominations, over Governor of OhioJim Rhodes and astronautJohn Glenn, respectively.

| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Howard Metzenbaum | 430,469 | 46.32% | |
| Democratic | John Glenn | 417,027 | 44.88% | |
| Democratic | Kenneth W. Clement | 50,375 | 5.42% | |
| Democratic | John W. McAlarney | 31,438 | 3.38% | |
| Total votes | 929,309 | 100.00% | ||
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Robert Taft Jr. | 472,202 | 50.28% | |
| Republican | Jim Rhodes | 466,932 | 49.72% | |
| Republican | William L. White (write-in) | 18 | 0.00% | |
| Total votes | 939,152 | 100.00% | ||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Republican | Robert Taft Jr. | 1,565,682 | 49.68% | ||
| Democratic | Howard Metzenbaum | 1,495,262 | 46.52% | ||
| American Independent | Richard B. Kay | 61,261 | 1.94% | N/A | |
| Socialist Labor | John O'Neill | 29,069 | 0.92% | N/A | |
| Total votes | 3,151,274 | 100.00% | |||
| Republicangain fromDemocratic | |||||