Prime Minister Julia Gillard in the end had no contender to face in the ballot.
Her Crazy Ivan Play, which the Playmaker Standard Table of Influence (the structured table and map of Plays and counter-Plays that can be run to influence an audience or a group) summarizes as a the deliberate acceleration of an impending threat or attack, worked.
No-one, it seems, was prepared to challenge her, despite the Plays being run around her and on her from within her own Party. Those Plays from MPs who included Simon Crean and Joel Fitzgibbon, fell flat.
The reasons for running a Crazy Ivan Play include the desire to get past a negative as quickly as possible, to force a mistake by the opposition (in the case presumably much of the rest of Labor, certainly those running Plays against her) and a lack of other options. Any and all of these may well be the reasons she took this option.
She lives to fight yet another day.
(Read my earlier posts: Plays in Australian politics: Labor calls leadership ballot, and Plays in Australian Politics: form a queue.)