[Genoa]

Formally there is no "primary system." What we have today developed on an ad hoc basis. What people need to recognize is that political parties are private organizations. The constitution has nothing to say about them. (In fact the founders warned us about them.) Parties can nominate a candidate any way they wish to, even at a "contested convention," which, by the way, is what all of them once were.

[Brookhaven]

If we had a parliamentary system, which encourages multiple parties and even smaller, fringe parties can have an impact, I would agree with you. But, we don’t.

We have a two party system.

The GOP and Democrat party may technically be private organizations, but the people that control these parties also control who may (and may not) run for political office. In practical terms, they control government, because they control who may be a government official.

This is, by definition, an oligarchy. It is unacceptable for our country to be run as an oligarchy.