The History website tells us; “In one of the greatest upsets in presidential election history, Democratic incumbent Harry S.
Truman defeats his Republican challenger, Governor Thomas E. Dewey of New York, by just over two million popular votes. In the days preceding the vote, political analysts and polls were so behind Dewey that on election night, long before all the votes were counted, the Chicago Tribune published an early edition with the banner headline ‘DEWEY DEFEATS TRUMAN.’” “Harry Truman was thrust into the presidency by Franklin D.
Roosevelt’s death in 1945. Approaching the 1948 presidential election, he seemed to stand a slim chance of retaining the White House.
Despite his effective leadership at the end of World War II and sound vision in the confused postwar world, many voters still viewed Truman as an ineffectual shadow of his four-term predecessor.