This infamous newspaper headline from 1948 showed that

The headline “Dewey Defeats Truman” appeared before all the election results were known, but Truman ultimately won. The mistaken headline shows that many people—including the newspaper—expected Dewey to win and did not expect Truman to be reelected. Therefore, the correct choice is that President Truman had not been expected to be reelected.

AI-written and checked against the verified answer.