Australians will go to the polls on August 21, Prime Minister Julia Gillard announced on Saturday. Gillard on Saturday has called on Governor-General Quentin Bryce to dissolve the parliament. 'This election, I believe, presents Australians with a very clear choice,' Gillard told reporters in Canberra on Saturday. 'This election is about the choice as to whether we move Australia forward or go back.' Gillard said moving forward required conviction and confidence. It also required a willingness to embrace new ways of thinking, acceptance of new challenges, listening and learning, and to embrace new solutions. 'Moving forward with confidence also requires a strong set of convictions and a clear set of values,' she said. Gillard said there was no challenge Australia could not conquer if the country worked together. 'So in this, the forthcoming election campaign, I'll be asking the Australian people for their trust,' she said. 'I'll be asking Australians for their trust so that we can move forward together.' 