According to this story, a few months ago the South Carolina Republican Party revised its declaration of candidacy form to require candidates in its presidential primary to promise they will support the party’s nominee in November, no matter who it turns out to be.

In 2012, when there was no such pledge in South Carolina’s Republican Party, Gary Johnson ran in the South Carolina Republican primary but he abandoned that campaign and was on the November 2012 South Carolina ballot as the Libertarian nominee.

Colorado isn’t holding a presidential primary in 2016. The Republican Party will start the process of electing delegates to the national convention in local caucuses in the spring of 2016, but the process of electing delegates will not have any matching caucus presidential voting. Of course various individuals chosen for the national convention will have their own preferences, but all delegates will be completely free to vote for anyone they wish at the July convention itself. See this Denver Post story.

According to this story, both sides are still filing briefs in Clarkson v Kobach, a lawsuit in state court over whether Wichita State University mathematician can see copies of voted ballots from a recent past election.