[79]
The Democrats nominated another Ohioan, James M. Cox, for president and the Assistant Secretary of the Navy, Franklin D. Roosevelt, for vice president. The question of the United States joining the League of Nations was a major issue in the campaign, as was the unfinished legacy of Progressivism.[80] Harding ran a "front-porch" campaign from his home in Marion, Ohio, but Coolidge took to the campaign trail in the Upper South, New York, and New England – his audiences carefully limited to those familiar with Coolidge and those placing a premium upon concise and short speeches.[81] On November 2, 1920, Harding and Coolidge were victorious in a landslide, winning more than 60 percent of the popular vote, including every state outside the South.[80] They also won in Tennessee, the first time a Republican ticket had won a Southern state since Reconstruction.[80]

"Silent Cal"
President Harding and Vice President Coolidge with their wives
The U.S. vice-presidency did not carry many official duties, but Coolidge was invited by President Harding to attend cabinet meetings, making him the first vice president to do so.[82] He gave a number of unremarkable speeches around the country.