Important caveat: Nevada is a closed caucus for both parties.
You have to be already a registered member of the party you want to caucus for.
But I don't think there's a time limit on when you register though. AFAIK, you can register for the party in question on the day of the caucus.
No, according to Wikipedia you have to already be registered by the day of the caucuses, there is no same-day registration.
Sorry, can you clarify where on Wikipedia it says that? And do you mean that you have to be registered before caucus day both as a voter and as a member of the party? And if so, what is the deadline for both?
https://en.wikipedia.org/wiki/Nevada_caucuses#Democratic_Party_process
That's how I understand it. If the process is identical to Iowa then I don't understand why it's called a close caucus and not semi-open.
NV Dems website is clear:
It's called closed because you must register as a Democrat to take part. Don't think Iowa people have to register with the party to take part, there in no formal ID control in fact.
Yeah, I think you can register to vote on the caucus election day. They don't have same day registration for state run elections, but a party run caucus is free to be less restrictive.