Former Vice President Kamala Harris is working with the progressive advocacy organization Demand Justice to mobilize Democratic donors in opposition to potential Supreme Court nominees that President-elect Donald Trump may put forward during his upcoming term.

The effort represents an early organizing push by Democrats to prepare for what could be significant battles over the composition of the nation's highest court. Trump previously appointed three justices during his first presidency, establishing a 6-3 conservative majority on the Supreme Court.

Demand Justice, founded in 2018, has been active in advocating for progressive judicial nominees and opposing conservative appointments. The group has previously organized campaigns against Republican-nominated judges and justices at various levels of the federal court system.

Harris's involvement signals that Democratic leaders are preparing for potential Supreme Court vacancies during Trump's second term. The current court includes several justices who could potentially step down in the coming years, though no retirements have been announced.

The fundraising and organizing efforts come as Trump prepares to take office and begin making judicial appointments. Supreme Court nominations require Senate confirmation, where Republicans will hold a majority starting in January 2025.