Voters are angry. One way to channel anger is by attending political rallies and demonstrating support for a presidential candidate. Donald Trump and Bernie Sanders are attracting record-breaking crowds at rallies across the country. Tonight, Sanders and Clinton are debating in Brooklyn. It’s their last televised debate before the New York primary on Tuesday. Despite the tremendous enthusiasm both Trump and Sanders enjoy, it may not be enough to secure their party’s nomination. So what will their supporters do if their preferred candidate doesn’t win? Does the movement dissipate?