One day to go until Australian election

There's just one more day to go until the Australian federal election. Both major party leaders, Scott Morrison and Labour's Anthony Albanese, have been doing a last minute campaign blitz - travelling all over the country in hopes of winning over undecided voters and marginal seats. Polls have tightened this week and more than 4.5 million people have already cast their vote. Worldwatch's Perlina Lau spoke to the ABC's Gavin Coote.