the united states senate elections of 1920 were elections for the united states senate that coincided with the election of warren g. harding as president. there was also a special election in 1921. democrat woodrow wilson's unpopularity allowed republicans to win races across the country, winning ten seats from the democrats, providing them with an overwhelming 59 to 37 majority. the republican landslide was so vast that the democrats failed to win a single race outside the south.