Amerikan electoralism is such a sham even if we remain entirely within the standards of what my man Lenin referred to as the liberal bourgeoisdemocratism. Organizing a party in this way would be flat-out illegal in most other places, parties are by definition public, not private. I don't even think it's fair to call the USA a two-party system, in fact it doesn't have any parties when you go by how a political party is commonly understood outside of the US.