On November 4, 2008, Modoc County delivered the most lopsided vote in favor of John McCain of any county in California, with 67.4% of voters opting for the Republican. The county also voted 74.2% in favor of Proposition 8 which amended the California Constitution to ban same-sex marriages; only Kern and Tulare counties voted in higher proportion, both opting for the Proposition with 75.4% of the vote. In 2012, Modoc was the most lopsided county in favor of Mitt Romney over Obama, by a margin of 69.1% to 27.6%.