Well, I disagree with your last statement. Party officials should act to protect the raison d'être for this party's existence in the first place. As I said ab

Well, I disagree with your last statement. Party officials should act to protect the raison d'être for this party's existence in the first place. As I said above, if you are a socialist, by all means, register a socialist party, get on the ballot in every state, raise enough money for advertising, etc. to be competitive - nothing is stopping you from doing this. That does not mean that non socialist party officials should just roll over whenever a socialist runs in their primaries. As an example, say what you want, Donald Trump is clearly not a conservative in any meaningful sense of conservatism. What is the long run result of his candidacy? there is a high probability that the long run result is irreversible damage to Republican party. Surely, party officials can act to prevent something like this, and not simply act as disinterested administrators. A political party in the US is essentially a private non for profit organization - that can run its affairs as the leadership of that party sees fit