United States Senate special election in Massachusetts, 2010 By municipality By municipality

| Municipality | Coakley_votes | Coakley_ | Brown_votes | Brown_ | Kennedy_votes | Kennedy_ | Total_vote | Turnout_ |
|---|---|---|---|---|---|---|---|---|
| Mendon | 792 | 30.9% | 1750 | 68.3% | 19 | 0.7% | 2561 | 62% |
| Merrimac | 1042 | 38.2% | 1651 | 60.5% | 37 | 1.4% | 2730 | 62% |
| Methuen | 4837 | 34.2% | 9171 | 64.9% | 117 | 0.8% | 14125 | 49% |
| Middleborough | 2615 | 29.6% | 6158 | 69.6% | 76 | 0.9% | 8849 | 57% |
| Middlefield | 126 | 51.9% | 113 | 46.5% | 4 | 1.6% | 243 | 68% |
| Middleton | 1081 | 30.7% | 2412 | 68.6% | 23 | 0.7% | 3516 | 64% |
| Milford | 3561 | 39.2% | 5432 | 59.8% | 88 | 1.0% | 9081 | 55% |
| Millbury | 1655 | 34.3% | 3125 | 64.7% | 49 | 1.0% | 4829 | 56% |
| Millis | 1383 | 36.0% | 2430 | 63.2% | 31 | 0.8% | 3844 | 72% |
| Millville | 323 | 28.4% | 799 | 70.3% | 14 | 1.2% | 1136 | 59% |
| Milton | 6436 | 50.0% | 6347 | 49.3% | 86 | 0.7% | 12869 | 70% |
| Monroe | 20 | 50.0% | 19 | 47.5% | 1 | 2.5% | 40 | 56% |