Held on 21 August, but government not formed for 17 days after that, which is unusual in Australia! Gillard formed a minority government, despite Abbott’s willingness to do everything except sell his arse
Here’s the Wikipedia take
See also Laura Tingle’s observation that climate change wasn’t a Big Issue in the campaign.
McAllister, I., Bean, C. and Pietsch, J. 2012. Leadership change, policy issues and voter defection in the 2010 Australian election. Australian Journal of Political Science 47: 189–209.
John Wanna and Marian Simms, eds, Julia 2010: The Caretaker Election (Canberra, 2012)