About the Data

The data comes from the official website of the Commonwealth of Pennsylvania, using the state's Voting & Election Statistics data.

The maps shows the total number of registered voters in each county, broken down by political party. The “No party” column includes only voters whose registration lists “No affiliation” exactly. It does not include voters whose party field is blank or listed as “none” or another unaffiliated designation.

Historical data is compiled from totals reported each November, using only party categories that have appeared consistently over the years.

Frequently Asked Questions

How do I register to vote?

To register to vote in Pennsylvania, you can complete a voter registration application online, by mail, or in person at various government agencies, including Pennsylvania Department of Transportation (PennDOT) photo license and driver's license centers, and your county election office. The deadline to register is typically 15 days before the election. If you do not register, you will not be able to vote.

How do I check my voter registration?

To check your voter registration in Pennsylvania, you can visit the Department of State's website. There, you can look up your status by name or driver's license / PennDOT ID number.

Can I switch my party registration before the election?

In Pennsylvania, you can switch your party registration at any time. However, if you want the change to take effect for an upcoming election, you must do so at least 15 days before that election. If you make the change within 15 days of the election, it will take effect for the next election cycle. To change your party affiliation, fill out a voter registration form and select the box indicating a "change of party."

Can I vote if I’m registered independent or not registered with a party?

Voters unaffiliated with a specific political party are able to vote in elections in Pennsylvania, with the exception of primary elections, because Pennsylvania has a closed primary system. However, such voters can still participate in statewide referenda, local ballot initiatives, and special elections that coincide with the primaries. All registered voters can participate in general elections.

Can I vote if my registration is inactive?

If your voter registration is marked as inactive, you can still vote. A voter is marked inactive if they have not voted for two consecutive federal election cycles and haven’t responded to a county notice about their registration. If that’s your status, you can still vote on election day. You’ll just have to sign a form confirming your eligibility when you visit your polling place.

Need Help?

If you have any questions or need assistance with voting, you can reach out to the Pennsylvania Department of State for guidance.