Nate Silver: “More nuanced analyses of the Sanders-Warren conflict suggest that maintaining a nonaggression pact would be mutually beneficial because otherwise Biden could run away with the nomination. But the word ‘mutually’ is debatable. I’d argue nonaggression toward Warren is pretty clearly in the best interest of Sanders, who was in the stronger position than Warren heading into the debate and who would probably prefer to focus on Biden. But it’s probably not beneficial to Warren. Any scenario that doesn’t involve Warren winning Iowa will leave her in a fairly rough position — and winning Iowa means beating Sanders there.”

