In the closing weeks before November's midterm elections, a quiet tension has surfaced within the Democratic Party — one that a Republican senator is now amplifying publicly. Senate Majority Whip John Barrasso claims his Democratic colleagues, in private moments, are wrestling with a party whose center of gravity has shifted toward a progressive wing they did not fully invite. Whether those whispered anxieties are as widespread as Barrasso suggests, the electoral facts are plain: candidates running well to the left of the establishment have won nominations in Michigan, Texas, and Minnesota, si