From Peter Hartcher at the SMH:
Kevin Rudd’s supporters have started circulating a caucus petition to allow a challenge to Julia Gillard for the prime ministership.
Rudd’s forces have launched the process in the confident expectation that Mr Rudd is prepared to stand, and that he has a majority.
To convene a meeting where the vote can take place, one-third of the caucus members need to sign a petition requesting a special caucus meeting.
This will prove a formality.
