It's Nevada, it's a caucus, and it's got Sheldon Adelson in it. You think maybe that sets the table for some good old-fashioned Lee Atwater-style ratfcking?

Sure it does. Jon Ralston:

Below is an email sent to GOP folks, with a link to this post, by Nick Vander Poel, a Republican activist and former AFPer. It was sent, he says, to 135 Republicans, and Vander Poel asked them to forward to others. He left out an important "not" in the missive (before "you will be arrested..."). The question is whether this goes viral or whether it affects only a few voters. I assume the latter -- there will be a fear factor -- but it's impossible to predict. Please forward to family and friends and fellow GOP caucus goers. I was able to confirm through a former Secretary of State elections official as well as a former County Clerk. Both said and confirmed that Republicans can show up on Saturday, February 20th and register as a Democrat if you have a burning desire. Then still be eligible to participate to caucus on Tuesday for GOP candidate of choice. What was also confirmed. The caucuses are NOT a state sanctioned election, the caucus is conducted by both parties. So this is NOT illegal and you will be arrested or fined. So put that rumor to rest. Some call this idea silly but the reality is, with low turnout the Democrat caucus is going to close and every little bit is going to help.

Please note that this is not something I believe the Sanders campaign in any way sanctions or wants to encourage. But this is Nevada, and Nevada Republicans play dirty. Since the voter registration rules are set in such a way that one might caucus for Democrats on Saturday and Republicans on Tuesday, why the heck not, especially if they think it can make a mess out of the Democrats' caucuses.

Or perhaps, as Ralston says, it won't make much of a difference at all. Unlike Republican caucuses, Nevada Democratic caucuses are much more of an endurance contest for voters, who have to stay until the doors close.