Question: What political party was the socialist candidate part of who ran for president in 1912?

Knowledge 1: 1912 United States presidential election
Roosevelt had served as president from 1901 to 1909, and Taft had won the 1908 Republican president nomination with Roosevelt's support. Displeased with Taft's actions as president, Roosevelt challenged Taft at the 1912 Republican National Convention. After Taft and his conservative allies narrowly prevailed at the Republican convention, Roosevelt rallied his progressive supporters and launched a third party bid. With the support of William Jennings Bryan and other progressives, Wilson won the Democratic Party's presidential nomination on the 46th ballot. Meanwhile, the Socialist Party renominated its perennial standard - bearer, Eugene V. Debs. [SEP] Knowledge 2: Eugene V. Debs
Eugene Victor Debs (November 5, 1855 – October 20, 1926) was an American socialist, political activist, trade unionist, one of the founding members of the Industrial Workers of the World (IWW) and five times the candidate of the Socialist Party of America for President of the United States. Through his presidential candidacies as well as his work with labor movements, Debs eventually became one of the best-known socialists living in the United States.
Knowledge 1: 1920 United States presidential election
Socialist Party candidate Eugene V. Debs received 913,664 popular votes (3.4 percent), despite the fact that he was in prison at the time for advocating non-compliance with the draft during World War I. This was the largest number of popular votes ever received by a Socialist Party candidate in the United States, although not the largest percentage of the popular vote. Debs received double this percentage in the election of 1912. The 1920 election was Debs' fifth and last attempt to become president. [SEP] Knowledge 2: Eugene V. Debs
Eugene Victor Debs (November 5, 1855 – October 20, 1926) was an American socialist, political activist, trade unionist, one of the founding members of the Industrial Workers of the World (IWW) and five times the candidate of the Socialist Party of America for President of the United States. Through his presidential candidacies as well as his work with labor movements, Debs eventually became one of the best-known socialists living in the United States.
Knowledge 1: 1912 United States presidential election
Roosevelt had served as president from 1901 to 1909, and Taft had won the 1908 Republican president nomination with Roosevelt's support. Displeased with Taft's actions as president, Roosevelt challenged Taft at the 1912 Republican National Convention. After Taft and his conservative allies narrowly prevailed at the Republican convention, Roosevelt rallied his progressive supporters and launched a third party bid. With the support of William Jennings Bryan and other progressives, Wilson won the Democratic Party's presidential nomination on the 46th ballot. Meanwhile, the Socialist Party renominated its perennial standard - bearer, Eugene V. Debs. [SEP] Knowledge 2: 1920 United States presidential election
Socialist Party candidate Eugene V. Debs received 913,664 popular votes (3.4 percent), despite the fact that he was in prison at the time for advocating non-compliance with the draft during World War I. This was the largest number of popular votes ever received by a Socialist Party candidate in the United States, although not the largest percentage of the popular vote. Debs received double this percentage in the election of 1912. The 1920 election was Debs' fifth and last attempt to become president.

Answer: Socialist Party of America