In 1980, Hawke stood down from his roles as ACTU and Labor Party President to announce his intention to enter parliamentary politics, and was subsequently elected to the House of Representatives as the Labor MP for Wills in Victoria. Three years later, he was elected unopposed to replace Bill Hayden as Labor Leader, and within just five weeks led Labor to a landslide victory at the 1983 election and was sworn in as Prime Minister. He led Labor to victory three more times, in 1984, 1987 and 1990, making him the most electorally successful Labor Prime Minister in history.