Colorado Ping ( Let me know if you wish to be added or removed from the list.)
There was a small army there waving Trump signs. It wasn't any kind of insurgent Republican group and I don't know why it was billed as such. It was the usual Republicans. As I predicted above, they were a couple hundred yards away on First Street (where they would be visible to the public) instead of at the front door of the local Democrat Party headquarters.
One tidbit I heard there was that Darryl Glenn, who over the weekend unendorsed Trump (but is still waffling), is getting financial support from Senate Conservatives Action, which is "the super PAC arm of the Senate Conservatives Fund." I don't think he has much of any other financial support. I haven't heard of them and don't know if they are GOPe; but their home page prominently features Ted Cruz and Mike Lee.