This market counts the total number of sitting members of the House or Senate who caucus with the Democratic Party who have called for Biden to drop out of the race.

In cases of ambiguity, resolution will be based primarily on the the New York Times Tracker, although I also recommend following the this spreadsheet, this spreadsheet, and CNN's Haley Talbot.

As of market creation, the total number per the NYT is 18 representatives and 1 senator, for 19 total.

More options will be added if necessary, and all options resolve NO if that many new qualifying individuals have not called for Biden to step aside before market close at the end of Saturday, July 13th in Pacific Time.