Pennsylvania Primary Elections: Who’s Included — And Who’s Left Out?

More than 1.4 million Pennsylvania voters registered as independents or third-party affiliates are currently unable to participate in the state’s primary elections — elections that often determine who will ultimately hold office in many districts across the Commonwealth.

Pennsylvania operates under a closed primary system, meaning only voters registered as Democrats or Republicans may vote in their respective party primaries. Supporters of the system argue that political parties should have the right to choose their own candidates without outside influence from non-party voters.

Critics, however, argue that the system excludes a growing number of voters from some of the most important elections in the state.

In many Pennsylvania districts, the primary election is effectively the most competitive race, particularly in heavily Republican or heavily Democratic areas where the general election outcome is often considered predictable. Independent and third-party voters living in those districts may have little or no voice in selecting the candidates who could eventually represent them in office.

The number of unaffiliated voters in Pennsylvania continues to grow as more Americans move away from traditional party identification. According to voter registration statistics, independents and third-party voters now make up a significant portion of the electorate.

Efforts to open Pennsylvania’s primaries to unaffiliated voters have surfaced multiple times in recent years. In 2019, a similar proposal passed the state senate with bipartisan support but ultimately failed to become law. Again in October 2024, lawmakers advanced another bipartisan effort to allow independents to participate in primary elections, but the proposal never received final consideration.

The debate over open versus closed primaries comes at a time when many Americans describe the country as increasingly politically polarized. Some advocates for reform believe allowing broader participation in primary elections could encourage more moderate candidates and increase voter engagement, while opponents maintain that political parties should retain control over selecting their nominees.

As frustration with government institutions continues to grow among voters across the political spectrum, the question remains: should millions of Pennsylvania voters continue to be excluded from the elections that often matter most?