[Gaffer]

If majority candidates are disastrous why should a plurality candidate be favored against the rules?

Because the rules change, often by those who do not represent the entirety of the party. This is exactly why "Republican" is such a bad word to a lot of voters who have historically stuck with them but are nearing a break with them.

[nathanbedford]

Because the rules change, often by those who do not represent the entirety of the party.

Why then would you want to change the rules in favor of one who was opposed by two thirds of the party?