Comment: Yup.

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In reply to comment: Right, they changed. That is (see in situ)

Yup.

In some states the party runs the caucus. Good because taxpayer funds don't contribute to a corrupt party system.
I'm not sure if state governments have any role in these "elections" or not. I have never lived in a caucus state.

In most(maybe all) primary states, the state runs the show.
In these states laws can be changed to force paper ballot voting or your public "out loud" system.

There is an uproar brewing in RI at the moment in the democratic primary. Anthony Gemma hired private investigators to look into voter fraud. One of the accusations is of voter machine tampering and paying people to vote.
He actually has a former state AG working on the case as well.
I bet nothing comes of it.