Presidential elections were held in the United States on November 5, 1912. The Democratic ticket of governor Woodrow Wilson of New Jersey and governor Thomas Marshall of Indiana defeated the Republican ticket of incumbent President William Howard Taft and university president Nicholas Butler while also defeating the Progressive/"Bull Moose" ticket of former president Theodore Roosevelt and governor Hiram Johnson of California and the Socialist Party ticket of former Indiana state representative Eugene V. Debs and Milwaukee mayor Emil Seidel.
Roosevelt served as president from 1901 to 1909 as a Republican, and Taft succeeded him with his support. Taft's conservatism angered Roosevelt, so he challenged Taft for the party nomination at the 1912 Republican National Convention. When Taft and his conservative allies narrowly prevailed, Roosevelt rallied his progressive supporters and launched a third-party bid. At the Democratic Convention, Wilson won the presidential nomination on the 46th ballot, defeating Speaker of the House Champ Clark and several other candidates with the support of William Jennings Bryan and other progressive Democrats. The Socialist Party renominated its perennial standard-bearer, Eugene V. Debs.