1966 Gubernatorial General Election Data Graphs - Massachusetts
by CountyData for this Contest was Contributed by on 2011-09-10
| Barnstable | McCormack | 24.3% | |
| Volpe | 75.3% | |
| Other | 0.4% | |
| Berkshire | McCormack | 35.1% | |
| Volpe | 64.4% | |
| Other | 0.6% | |
| Bristol | McCormack | 45.0% | |
| Volpe | 54.6% | |
| Other | 0.4% | |
| Dukes | McCormack | 28.1% | |
| Volpe | 71.4% | |
| Other | 0.5% | |
| Essex | McCormack | 36.9% | |
| Volpe | 62.5% | |
| Other | 0.6% | |
| Franklin | McCormack | 29.7% | |
| Volpe | 69.9% | |
| Other | 0.4% | |
| Hampden | McCormack | 37.0% | |
| Volpe | 62.2% | |
| Other | 0.8% | |
| Hampshire | McCormack | 37.8% | |
| Volpe | 61.7% | |
| Other | 0.4% | |
| Middlesex | McCormack | 34.3% | |
| Volpe | 65.2% | |
| Other | 0.5% | |
| Nantucket | McCormack | 28.0% | |
| Volpe | 71.4% | |
| Other | 0.6% | |
| Norfolk | McCormack | 32.1% | |
| Volpe | 67.4% | |
| Other | 0.5% | |
| Plymouth | McCormack | 30.3% | |
| Volpe | 69.3% | |
| Other | 0.4% | |
| Suffolk | McCormack | 46.6% | |
| Volpe | 52.6% | |
| Other | 0.8% | |
| Worcester | McCormack | 37.2% | |
| Volpe | 62.4% | |
| Other | 0.4% | |