Australia's conservative opposition led by Tony Abbott is poised to post a landslide victory in national elections over Labor Prime Minister Kevin Rudd, an exit poll by Australia's Nine television network said on Saturday (September 7).<br/> <br />Voting in Australia's most populous eastern states closed at 6 p.m. local time (0800 GMT) and official results should be known within a few hours.<br/> <br />The exit poll pointed to a possible 40-seat majority for Abbott's Liberal-National Party coalition, ending six years of Labor Party rule and three years of minority government.