Labor leadership live: Julia Gillard or Kevin Rudd, who will lead party KEVIN Rudd supporters are circulating a petition for a special caucus meeting to trigger a leadership spill. Sky News reports the petition would be for a special caucus for 9am tomorrow morning. Mr Rudd's backers need 35 signatures to call on a special meeting of the labor caucus. Meanwhile, Foreign Minister Bob Carr told the Press Club he would not speculate on what he called "unconfirmed" news of a petition calling for a ballot. Earlier this morning, Independent MP Bob Katter said he will back Kevin Rudd and protect his government from a no-confidence vote even though he hasn't spoken with the member for Griffith. Mr Rudd's backers have brushed off the threats of a key independent Tony Windsor to consider a no-confidence motion in the Gillard Government if there is a leadership change as another Independent Andrew Wilkie declared he had an "open mind." "The problem is that no one is driving the bus," Mr Katter told reporters today. Mr Katter's comments come after key independents Tony Windsor and Rob Oakeshott announced they will not stand for re-election in September. An at times emotional Tony Windsor during a press conference where he announced he would be retiring from politics and would not stand for his seat at the next election.