“Elizabeth Warren, on a visceral level, is fighting for everyday people and against powerful interests,” Progressive Change Campaign Committee co-founder Adam Green said, “and that comes through with an authenticity this moment demands.”

Green, whose group has supported Warren for years while talking up “the Warren wing” of the Democratic party, also gave a hint of how his group and potentially others might seek to distinguish the Massachusetts senator from other leading contenders.

“There are different theories on being effective, but she believes in picking issues that are super popular and forging coalitions to win on those issues,” he said. “Others can be more of a loner, or willing to charge into battle first before having a fully baked plan.”