The House primary in Ohio took a nasty turn as national Democrats descend. “Nina Turner, a former state senator, is running on a push for universal health care and a $15-an-hour minimum wage. Cuyahoga County Council member Shontel Brown, who also chairs the county’s Democratic Party, is pitching herself as a staunch loyalist of Biden who wouldn’t try to force the White House agenda too far to the left,” NBC News’s Henry Gomez reports. “The nasty tone that has been present for months escalated Thursday as high-profile surrogates for both candidates were set to arrive here. Turner, 53, unleashed a commercial that questions Brown’s ethics and ends with the image of a jail door slamming. … Brown, 46, has sought to paint Turner, known nationally for her work on Sen. Bernie Sanders’ presidential campaigns, as too much of an outsider and too critical of Biden to accomplish anything in Congress. The national endorsers, while welcomed by the candidates, have superimposed past Democratic battles onto the district, frustrating those who say eagerness for a proxy war is overshadowing local nuances and issues.”