Woodrow Wilson Democratic Warren G. Harding Republican The 1920 United States presidential election in Oregon took place on November 2, 1920.

[3] In 1916, when a powerful "peace vote" due to opposition to participation in World War I[4] allowed Woodrow Wilson to sweep most of the West and Great Plains, Western Oregon’s largely Yankee population rejected Wilson’s progressivism as it had rejected the “free silver” politics of William Jennings Bryan in 1896.

[5] By the beginning of 1920 skyrocketing inflation and Wilson's focus upon his proposed League of Nations at the expense of domestic policy had helped make the incumbent President very unpopular[6] – besides which Wilson also had major health problems that had left First Lady Edith effectively running the nation.

[8] Despite the fact that Oregon had been the only Western state to support Hughes and had not voted Democratic in a two-way race for over half a century, Cox did visit the state on September 14 to discuss Prohibition, saying that the League of Nations was an opportunity that would not be repeated (“This League or None”).

[9] Cox also said whilst touring the West that Prohibition should not be an issue as it would depend on enforcement rather than the actual passage of the Eighteenth amendment.