1920 United States Senate election in Missouri

The 1920 United States Senate election in Missouri took place on November 2, 1920 in Missouri. The incumbent Republican Senator, Selden P. Spencer, was re-elected to a full term, having won a special election in 1918. He defeated Breckinridge Long of the Democratic Party. Spencer underperformed Republican presidential nominee Warren G. Harding, who won 54.6% of the vote in the concurrent presidential election.

Candidates

 * Charles M. Hay, former State Representative for Callaway County
 * John C. Higdon, lawyer
 * Arthur N. Lindsey, pastor
 * Breckinridge Long, former Assistant Secretary of State
 * George H. Scruton, editor of the Sedalia Democrat
 * Henry Samuel Priest, former judge for the United States District Court for the Eastern District of Missouri

Candidates

 * Dwight F. Davis, adjutant and former Olympic tennis player
 * James L. Minnis, former attorney
 * Selden P. Spencer, the incumbent Senator

Farmer–Worker
The Farmer–Worker Party nominated carpenter W. J. Mallett.

Socialist Labor
The Socialist Labor Party nominated Andrew Trudell.