Mata'afa was re-elected Prime Minister following the 1961 elections, leading the country to independence in 1962. He was re-elected again following elections in 1964 and 1967. However, after the 1970 elections, he was defeated by Tupua Tamasese Lealofi IV by 25 votes to 20 in the third round of voting. It was reported that he would have probably won in the second round (which was tied at 23 votes each) if one of his supporters, To'omata Lilomaiava Tua, had not died the previous week.