I think the point is that a caucus is overseen by the party, not the state. I still don’t know the legality of doing it at this late stage after the primary has been agreed to and will be set on Jan 5, but that’s their thinking.
This is my favorite part though:
Nevertheless, Williams told NBC News that the Colorado Republican Party would look to kick off the process of putting together a caucus in “the next week or two,” requesting a waiver to convert the system from the Republican National Committee. … “We’re figuring it out as we go,” Williams said.
A whole week or two to put together a caucus.
Colorado has literally done exactly this before to keep a non-natural born citizen off the ballot, and none other than Judge Gorsuch decided that case. In his ruling he wrote that the state has a right to conduct their elections in a way to ensure their stability and in accordance with their laws. Thomas ruled the same way in Bish v Gore, and the SC ruled the same way while overturning key provisions in the Voting Rights Act.
I wonder what the difference is this time that would make conservatives do a full reverse and say states cannot control their own elections?