“The debate is quickly moving past the question of whether Democrats should seek to reform our courts to the question of exactly what type of reform to pursue. Adding seats to the Supreme Court is a necessary step,” said Brian Fallon, a former Hillary Clinton aide who runs Demand Justice. “It is reassuring to see so many candidates beginning to recognize the urgency of this.”

Added Ezra Levin, co-founder of Indivisible: “Any Democratic presidential candidate who is serious about implementing a progressive agenda has to seriously consider appointing new justices to unpack the courts.”

A new advocacy group launched in October called Pack the Courts is vying to make court reform a central theme of the 2020 election. The group has raised $500,000 and aims to spend $2 million during the 2020 campaign cycle, said executive director Aaron Belkin. He warned that major progressive proposals like “Medicare for All” would not survive conservative legal challenges “because the court has been stolen.”