In failing to demonstrate what they stand for, Democrats fumbled the chance to show why they deserve a return to power, centrists and progressives say.

A generational divide, seen in newer lawmakers’ impatience with bipartisanship and for colleagues who don’t understand new media, has emerged as one of the deepest rifts within the party.

Catherine Cortez Masto of Nevada were among the first Democrats to publicly back the Republican funding bill, arguing that a shutdown would only strengthen Trump’s hand. They were joined by six more Democrats—Dick Durbin of Illinois,