As Leader of the Opposition Manley became an outspoken critic of the new conservative administration. He strongly opposed intervention in Grenada after Prime Minister Maurice Bishop was overthrown and executed. Immediately after committing Jamaican troops to Grenada in 1983, Seaga called a snap election – two years early – on the pretext that Dr Paul Robertson, General Secretary of the PNP, had called for his resignation. Manley, who may have been taken by surprise by the maneuver, led his party in a boycott of the elections, and so the Jamaica Labour Party won all seats in parliament against only marginal opposition in six of the sixty electoral constituencies.