The Party for Socialism and Liberation (PSL) is a communist party in the United States. PSL was established in 2004, when its members split from the Workers World Party. The group believes that a socialist revolution is necessary to overthrow capitalism and establish socialism. The organization works toward this end by organizing and participating in local protests, running candidates in elections, and political education favoring a revolutionary socialist vanguard party.

Gloria Estela La Riva is an American perennial political candidate and communist activist with the Party for Socialism and Liberation (PSL) and the Peace and Freedom Party. She was the PSL's nominee and the Peace and Freedom's nominee in the 2020 presidential election, her tenth consecutive run as either a presidential or vice presidential candidate. She was previously a member of the Workers World Party. She ran as the PSL's and the Peace and Freedom Party's presidential candidate in the 2016 presidential election, with Eugene Puryear and Dennis J. Banks as her running mates respectively. She was the PSL's presidential nominee in the 2008 presidential election. For the 2020 election, Sunil Freeman was her running mate.