HILLARY’S NEVADA PROBLEM: Jon Ralston explains to Chris Cillizza.

I don’t consider those polls reliable or recent. The Clinton folks are saying it could be close and distorting Nevada’s demographics (suddenly we are as white as Iowa and New Hampshire!) because they are worried about the Bernie surge. And I think they should be. Team Clinton has an infrastructure advantage, and its staff here is first-rate and knows the state. Some worked here in ’08. They also arrived six months before Team Sanders, whose folks do not know the state nearly as well. But he is outspending her on TV — this may be changing — and same-day registration on Feb. 20 may allow a lot of new, Sanders voters to change the course of the election. Hillary knew a long time ago she would need a firewall in Nevada; that’s why she set up here so early. The firewall isn’t breached yet, but it may be buckling soon.

Clinton is relying on outsized support from minority voters in Nevada and South Carolina to put a stop to the Sanders Surge, but all may not be proceeding as she has foreseen.