Here's What's Bringing Bernie Sanders Voters to the Polls in Nevada

Early results from today's Democratic caucus in Nevada show a very close race between Bernie Sanders and Hillary Clinton, in a state that the Clinton campaign had long considered a sure thing.

But Sanders has pulled the race close to a tie thanks to a wave of support and backing from labor groups like National Nurses United, which endorsed Sanders all the way back in August.

The nurses union has pretty high expectations of Sanders. Here's a picture of a flyer the group is apparently passing around in Nevada today making the case for their preferred candidate (via Nancy Cordes of CBS News).