Ronald Reagan
Ronald Reagan
Ronald Reagan
You are probably asking about Ronald Reagan, and in fairness, he was a radio star and a TV and movie actor long before he ever became a politician. It is also worth noting that other presidents have made occasional guest appearances on TV or in movies; but Reagan is probably the one who became well-known for his professional acting career. As a result, he was already popular when he entered politics.
kennedy
I have read somewhere that Obama's dream before becoming President was to be a bank manager.
Truman
George W. Bush, Jr. was Governor of Texas before becoming President of the United States.
Jimmy Carter was in the peanut business, before becoming President.
before
President Lyndon B. Johnson served the longest in the United States Senate before becoming president. He was in the senate for twelve years.
Lincoln's job before becoming president was as a lawyer. But he held many jobs prior to studying and becoming a lawyer. Two of them are as a clerk and surveyor.
Ronald Reagan