What caused frankelin roosevle to leave politics in 1920?

Franklin D. Roosevelt left politics in 1920 primarily due to his unsuccessful bid for the vice presidency as James M. Cox's running mate in the Democratic Party. The defeat, along with the onset of polio that year, significantly impacted his political career and personal life. He took a step back to focus on his health and family, retreating from the political spotlight until he re-emerged in the late 1920s.