Partisan Voting Index for Counties in Delaware

This Map Displays the Partisan Voting Index Value for each county in Delaware. 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 2024 and 2020 presidential election. Of the 3 Counties in Delaware The County with the highest Republican PVI is Sussex County at +7. The County with the highest Democrat PVI is New Castle County at +17.