At the end of 1967, Holt vanished while swimming in rough seas near Melbourne; his body was never recovered. John McEwen, as leader of the junior Coalition partner, the Country Party, took over as prime minister for three weeks until the Liberals could elect a new leader. Senator John Gorton won the vote and became prime minister. The leadership campaign was conducted mostly by television, and Gorton appeared to have the visual appeal needed to keep Whitlam out of office. Gorton resigned his seat in the Senate, and in February 1968 won the by-election for Holt's seat of Higgins in Victoria. For the remainder of the year, Gorton appeared to have the better of Whitlam in the House of Representatives. In his chronicle of the Whitlam years, however, speechwriter Graham Freudenberg asserts that Gorton's erratic behaviour, Whitlam's strengthening of his party, and events outside Australia (such as the Vietnam War) ate away at Liberal dominance.