This is the electoral history of Ronald Reagan. Reagan, a Republican, served as the 40th president of the United States (1981–89) and earlier as the 33rd governor of California (1967–75). At of age at the time of his first inauguration, Reagan was the oldest person to assume the presidency in the nation's history, until Donald Trump was inaugurated in 2017 at the age of . In 1984, Reagan won re-election at the age of , and was the oldest person to win a US presidential election until Joe Biden won the 2020 United States presidential election at the age of .