This Map Displays the Partisan Voting Index Value for each county in Massachusetts. The Partisan Voting Index (PVI) is a measurement of how strongly a county leans toward the Democratic or Republican Party. The PVI is calculated by taking the average percentage for the winning party in a county for the last two elections and subtracting that value from the national average for that party in the same two elections. The data is based on results from the 2020 and 2016 presidential election. Of the 14 Counties in Massachusetts The County with the highest Republican PVI is at +0. The County with the highest Democrat PVI is Suffolk County at +33.
List of All Counties in Massachusetts With Partisan Voting Index (2020 Presidential Election Results) | ||||
|---|---|---|---|---|
| Map Key | Name | Partisan Voting Index (2020) | ||
| Barnstable County | Democrat +11 | |||
| Berkshire County | Democrat +23 | |||
| Bristol County | Democrat +7 | |||
| Dukes County | Democrat +29 | |||
| Essex County | Democrat +14 | |||
| Franklin County | Democrat +20 | |||
| Hampden County | Democrat +10 | |||
| Hampshire County | Democrat +23 | |||
| Middlesex County | Democrat +22 | |||
| Nantucket County | Democrat +22 | |||
| Norfolk County | Democrat +17 | |||
| Plymouth County | Democrat +7 | |||
| Suffolk County | Democrat +33 | |||
| Worcester County | Democrat +8 | |||