the hands of Holyoake and the National Party in the elections of 1960. Holyoake's government lasted twelve years, the party winning re-election three times (in 1963, 1966, and 1969). However, during this period Social Credit arose, which broke the National/Labour duopoly in parliament, winning former National seats from 1966. Holyoake retired from the premiership and from the party leadership at the beginning of 1972, and his deputy, Jack Marshall, replaced him. Marshall suffered the same fate as Holyoake. Having succeeded an experienced leader in an election-year, he failed to establish himself in time. Marshall had an added disadvantage; he had to compete against the much more popular and charismatic Labour leader Norman Kirk, and lost the ensuing election. Unpopular policies, including initiating clear felling of parts of the Warawara kauri forest, also needlessly alienated voters. Third Government (1975–1984) Within two years the National Party removed Marshall as its parliamentary leader and replaced him with Robert Muldoon, who had previously served as Minister of Finance. An intense contest between Kirk and Muldoon followed. Kirk became ill and died in office (1974); his successor, Bill Rowling, proved no match for Muldoon, and in the 1975 election, National under Muldoon returned comfortably to power. The Muldoon administration, which favoured interventionist economic policies, arouses mixed opinions amongst the free-market adherents of the modern National. Bill Birch's "Think Big" initiatives, designed to invest public money in energy self-sufficiency, stand in contrast to the party's views. Muldoon's autocratic leadership style became increasingly unpopular with both the public and the party, and together with disgruntlement over economic policy led to an attempted leadership change in 1980. Led by ministers Derek Quigley, Jim McLay, and Jim Bolger, the challenge (dubbed the "colonels' coup") against Muldoon aimed to replace him with Brian Talboys, his deputy. However, the plan collapsed as the result of Talboys' unwillingness, and Muldoon kept his position. Under Muldoon, National won three consecutive general elections in 1975, 1978 and 1981. However, public dissatisfaction grew, and Muldoon's controlling and belligerent style of leadership became less and less appealing. In both the 1978 and 1981 elections, National gained fewer votes than the Labour opposition, but could command a small majority in Parliament because of the then-used First Past the Post electoral system. Dissent within the National Party continued to grow, however, with rebel National MPs Marilyn Waring and Mike Minogue causing particular concern to the leadership, threatening National's