Having trouble figuring out if you want to join a political party (and be able to vote in PA's Closed Primaries)?
Need help figuring out which political party you wish to belong to when you register to vote? Not sure if you're a Democrat, Republican, or other?
Take the Pew Political party typology quiz here.
In Pennsylvania, there are only two major political parties-- Democratic and Republican-- and only candidates from those two political parties appear on the ballots in PA's Closed Primaries. In other words, in PA's Closed Primaries, Democrats vote for Democrats and Republicans vote for Republicans on different Primary ballots.
However, any voter may vote, even in a Primary, if there is a ballot question, constitutional amendment, or a special election. In a Primary, there will be a special ballot for these unaffiliated voters. The winners of the Primaries then appear on the fall General Election ballot (which is the same for all voters).
In addition to the Democratic and Republican candidates on the General Election ballot, there may be candidates from the minor parties (Green and Libertarian), or from"political bodies" (like the new Keystone and Forward parties) whose candidates may appear only on a General Election ballot. There is no "Independent" party recognized in PA.
Remember, ANY registered voter may vote for ANY candidate in ANY party on a General election ballot!