Insurgent Democrats make waves—while Trump’s economic approval sinks

Survey Says is a weekly column rounding up three of the most important polling trends or data points you need to know about. You’ll also find data-based updates on past Daily Kos reporting, plus a vibe check on a trend that’s driving politics.

Progressives raise hell—and big money

A new poll of young Americans signals trouble for the Democratic establishment. 

Among Americans ages 18 to 29, the approval rating for congressional Democrats has plummeted 19 percentage points...