Political parties in Pennsylvania play a significant role in the state's governance and elections. The two major parties are the Democratic Party and the Republican Party, which dominate the political landscape. Each party has its own platform and policies, influencing local, state, and national elections. In addition to the major parties, Pennsylvania has several smaller parties, such as the Green Party and the Libertarian Party. These parties often focus on specific issues and can impact election outcomes, especially in closely contested races. Voter registration in Pennsylvania allows individuals to choose their party affiliation, shaping the political dynamics of the state.