CANBERRA - Australian Prime Minister Malcolm Turnbull Sunday called an election for both houses of parliament on July 2 as he seeks his own mandate with the public just eight months after deposing predecessor Tony Abbott in a party coup. The widely expected announcement was the latest chapter in the turbulent world of Australian politics, where a revolving door of leaders saw multi-millionaire former banker Turnbull, 61, become the fourth prime minister in just over two years when he ousted Abbott in September.