Johnson is a supporter of the Democratic Party. In 2006, he publicly endorsed Phil Angelides for Governor of California,[212] in 2007 he supported Hillary Clinton in her presidential campaign,[213] and in 2010 he endorsed Barbara Boxer in her race for re-election to the U.S. Senate.[214] In 2012, he endorsed Barack Obama for president.[215] He endorsed and appeared in campaign ads for unsuccessful Los Angeles mayoral candidate Wendy Greuel in 2013.[216] In 2015, he once again endorsed Hillary Clinton in her second presidential campaign.[217] He hosted a fundraiser for Hillary Clinton's presidential campaign on August 22, 2016.[218]