At Brookings, Elaine Kamarck and Alexander Podkul urge caution about overstating the Democrats' leftward drift.
For every stunning progressive upset—such as the victories of Ayanna Presley in her Massachusetts congressional primary or Andrew Gillum in the Florida gubernatorial primary—there are victories of more conventional Democratic candidates. Gov. Andrew Cuomo easily won his re-nomination in New York, and likewise Sen. Tom Carper (DE), handily beat Our Revolution-endorsed Kerri Harris in Delaware’s U.S. Senate primary.
As the following table reports, self-identified progressive Democrats did well. A total of 101 progressive Democrats won their primaries, which was just under 3 in 10 of all progressives. However, establishment candidates fared somewhat better. A total of 139 won their primaries, with better than 1 in 3 establishment candidates winning the Democratic nomination.