MoveOn (formerly known as MoveOn.org) is a progressive public policy advocacy group and political action committee. Formed in 1998 around one of the first massively viral email petitions, MoveOn has since grown into one of the largest grassroots progressive campaigning communities in the United States, with a membership of millions. MoveOn did not endorse a candidate during the 2020 presidential primary campaign; it then endorsed and actively supported Joe Biden in the general election. Rahna Epting became Executive Director of both MoveOn Civic Action and MoveOn Political Action in 2019.