“I don’t get it. I don’t think anyone expected this race to look like this,” said one former Clinton aide who maintains ties with the campaign. “A big loss in New Hampshire, basically a tie going into Nevada. You have to ask yourself, ‘What’s next?’

Team Clinton maintains confidence that its lead in South Carolina will hold, but the potential loss in Nevada has put people on edge about a possible “domino effect” in which states could fall one by one to Sanders as the Vermont Independent gains momentum.

“It’s hard to feel confident about South Carolina if you lose Nevada,” the former aide said…

Internally, both Bill and Hillary Clinton have voiced their displeasure with various aspects of the campaign, particularly on messaging and organizing, according to sources. Those involved with the campaign increasingly a reshuffling will take place, especially if Clinton suffers a loss in Nevada.

“The shit will hit the fan,” one longtime friend of the Clintons predicted. “No doubt about it.”