“A grass-roots upheaval in Maryland’s Democratic Party has made it an unexpected showcase for national efforts by liberal activists and unions seeking to revitalize the party and push it to the left,” the Washington Post reports.

“Primary victories by progressives in three premier races — governor and county executive in Montgomery and Baltimore counties — have created a prominent testing ground for a new brand of Democratic politics, featuring ambitious and potentially expensive policy proposals and greater outreach to the working class.”

“Fueled by anger at President Trump and a sense that Democrats have lost touch with their base, the insurgency is stirring strife within the party, with some moderates already abandoning ship.”