28 Thomas Woodrow Wilson

Woodrow Wilson (March 4, 1913—March 4, 1921). Democratic. Wilson was elected president as a Democrat in 1912. He was the only U.S. President to earn a Ph.D. degree. During his administration the U.S. entered World War I and renounced neutrality when Germany began unrestricted submarine warfare. He was barely reelected in 1916.