2016 Elections

Sanders Writes a Chapter in the Behavioral Science Textbook

His reluctance to drop out shows the power (and danger) of group polarization.

Echo chamber.

Photographer: Jeff Swensen/Getty Images

Bernie Sanders won't be the Democratic presidential nominee, yet so far he refuses to concede to Hillary Clinton, pledging to "continue to fight for every vote and every delegate we can get.” This is more than just stubbornness: Even if he bows out soon, Sanders and his supporters appear to believe more strongly than ever that the system is rigged against him and that Clinton is a captive of the banks -- and that Democratic voters have been rising up in support of his “political revolution, ” regardless of the actual vote count.

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