But as they adjust to the possible new reality of divided government, many progressive groups and leaders are focusing their attention on Mr. Biden’s executive branch appointments with intense urgency, viewing these positions as gatekeepers, in effect, for vast numbers of policy.

In recent weeks, they have called on Mr. Biden not to appoint any corporate lobbyists or c-suite corporate executives to executive branch positions. A group called the Revolving Door Project is already drawing up a “blacklist” of possible Biden appointments that progressives may view as problematic.

“We want appointees who will wake up trying to figure out, What can I do to make this government work for people?” said Jeff Hauser, the executive director of the Revolving Door Project. “There are allies who focus more on who they do want. We focus on who we don’t want.”