Nevada prepares to caucus

I am in Las Vegas and it is heaven for a political junkie. Lots of Hillary and Obama ads in the media. Non-stop coverage on local news. One major media theme: unions endorsed Obama without polling members. Another: women and Hispanics like her better. The media, especially the Las Vegas Review-Journal and local TV news, are in Hillary's camp.

is a caucus state. Will union members stand up publicly and challenge their union?