Though the 2016 Never Trump movement failed to stop the populist New York mogul from capturing the GOP nomination, it wasn’t from lack of effort. Democrats now trying to block socialist Bernie Sanders’s ascent have no comparable political infrastructure.

The Vermont senator is on the cusp of running up his delegate count to the point that a moderately center-left rival will find it difficult to catch up, including former Vice President Joe Biden, billionaire former New York City Mayor Michael Bloomberg, former South Bend, Indiana, Mayor Pete Buttigieg, and Minnesota Sen. Amy Klobuchar. Even a populist left-wing rival like Massachusetts Sen. Elizabeth Warren is far down in the delegate count after the Iowa caucuses and the New Hampshire primary.