Squad scores with Summer Lee win, but faces a long primary calendar

Rep. Summer Lee’s primary victory over a more moderate Democrat in Pennsylvania this week offered a jolt of momentum for progressives and dialed up the urgency for those targeting the “Squad.”

It was a promising result for fellow Squad members, especially Democratic Reps. Jamaal Bowman (N.Y.) and Cori Bush (Mo.), who are both trying to fend off formidable primary threats of their own amid an influx of spending by pro-Israel groups looking to topple them.

“I expect we're going...