To further add to that, many states do closed primaries. If a voter isn't registered with one of the two ordained parties, they realistically cannot participate in primaries at all.
If there would six parties to choose from, for example, I think it would be hard to argue that closed primaries are harmful. But since we have a duopoly, they exclude a significant portion of the voting population from participating until late in the process.
If there would six parties to choose from, for example, I think it would be hard to argue that closed primaries are harmful. But since we have a duopoly, they exclude a significant portion of the voting population from participating until late in the process.