The past year has shown that millions of ordinary people are ready for an alternative, one pointed to by the success of Sanders and the Labour Party leader Jeremy Corbyn in Britain. These leaders have tried to articulate a humanist, social-democratic vision—a platform with concrete demands that, if met, would improve the lives of the poor, restore dignity and means to workers, and assure young people that their efforts are not in vain. This vision resonates with voters. This is the vision that must be built on—and expanded—by any party that wants to be relevant in these times.