In Arizona, a crowd of thousands suggested that the left still has a pulse. On a recent Saturday, a group of rank-and-file Democrats, standing in the blinding midday sun on a football field in Tucson, Arizona, spoke about their frustrations with their party.

The two progressive leaders, one young and one old, are touring Western cities with a similar message but a key difference in how they sell it.

How should Democrats respond to Trump? His second term has sparked an internal reckoning.