2018 Senatorial General Election Data Graphs - Massachusetts
by County
| Barnstable | Warren | 53.0% | |
| Diehl | 43.8% | |
| Ayyadurai | 3.1% | |
| Other | 0.1% | |
| Berkshire | Warren | 72.0% | |
| Diehl | 25.1% | |
| Ayyadurai | 2.9% | |
| Other | 0.1% | |
| Bristol | Warren | 52.2% | |
| Diehl | 44.3% | |
| Ayyadurai | 3.5% | |
| Other | 0.1% | |
| Dukes | Warren | 73.1% | |
| Diehl | 23.1% | |
| Ayyadurai | 3.8% | |
| Other | 0.0% | |
| Essex | Warren | 57.3% | |
| Diehl | 38.9% | |
| Ayyadurai | 3.8% | |
| Other | 0.1% | |
| Franklin | Warren | 69.5% | |
| Diehl | 26.7% | |
| Ayyadurai | 3.8% | |
| Other | 0.0% | |
| Hampden | Warren | 55.7% | |
| Diehl | 40.5% | |
| Ayyadurai | 3.8% | |
| Other | 0.1% | |
| Hampshire | Warren | 70.6% | |
| Diehl | 25.7% | |
| Ayyadurai | 3.6% | |
| Other | 0.1% | |
| Middlesex | Warren | 66.1% | |
| Diehl | 30.4% | |
| Ayyadurai | 3.4% | |
| Other | 0.1% | |
| Nantucket | Warren | 64.0% | |
| Diehl | 32.5% | |
| Ayyadurai | 3.4% | |
| Other | 0.1% | |
| Norfolk | Warren | 58.6% | |
| Diehl | 38.2% | |
| Ayyadurai | 3.1% | |
| Other | 0.1% | |
| Plymouth | Warren | 48.0% | |
| Diehl | 49.1% | |
| Ayyadurai | 2.9% | |
| Other | 0.1% | |
| Suffolk | Warren | 78.6% | |
| Diehl | 18.6% | |
| Ayyadurai | 2.5% | |
| Other | 0.2% | |
| Worcester | Warren | 51.3% | |
| Diehl | 44.5% | |
| Ayyadurai | 4.1% | |
| Other | 0.1% | |