Are Colorado Republican Caucuses Now Irrelevant?

[Zundfolge]

I don't remember the last time that a winner of the Colorado primary caucuses was even in the race by the time the convention came around.

This is one of my biggest problems with the GOP. Our candidates get picked by a bunch of Democrats voting in New Hampshire's open primary.

I would like to see the current primary/caucus/convention system completely scrapped and move to a national, one day CLOSED primary election held exactly one year before election day.