Perhaps. But Harlemites kept sending to Washington Rep. Vito Marcantonio (R-NY) who followed every twist and turn of the Soviet party line until the Democrat machines came together in 1950 to oust him.
Marcantonio was only a full-fledged Republican in his first term. The only Congressmember in the history of the body elected to have run on the Communist Party line. He was a member of the American Labor Party for the remainder of his time in the House (occasionally managing to get either the GOP or Dem lines). He represented East Harlem while Adam Clayton Powell, Jr. (later on) had the remainder of Harlem. At one point, his district stretched down all the way to 59th Street.
https://www.ourcampaigns.com/RaceDetail.html?RaceID=509112
He’s a piker now compared to most of the Demonrats today.