Which party win the most conservative candidate in the 1912 election?

The election of 1912 was between four candidates. William Howard Taft was the incumbent at the time and was nominated by the Republican Party to represent the conservative wing. Theodore Roosevelt also sought nomination from the Republicans, but failing to receive it, he chose to run with the Progressive ("Bull Moose") Party. Woodrow Wilson ran for the Democratic Party, and Eugene V. Debs for the Socialist Party.

Wilson swept away the competition and won the election easily.