Kammala wannan jumla: An zabi shi a matsayin dan takarar shugaban kasa na Democrat a kuri'ar arba'in da hudu na Majalisar Dattijai
Babban Taron Jam'iyyar Democrat na 1920. Gudanar da tikitin tare da Shugaba Franklin D. Roosevelt a matsayin mataimakinsa na mataimakin shugaban kasa, Cox ya sha wahala mafi yawan kuri'un kuri'un da aka yi (margin 26.17%) tun lokacin da aka sake zabar James Monroe a 1820 kamar yadda kasar ta yarda da dan takarar Republican Warren G. Harding na kira don "komawa ga al'ada" bayan shekarun Wilson.