On 17 January 2008, Buswell announced he would challenge Omodei's leadership. After a spill motion carried, Omodei did not contest the ensuing leadership vote, and Buswell defeated Shadow Minister for Police and Justice
Rob Johnson to become the new leader. In the following media conference, he refused to comment on allegations relating to a drunken night at parliament, where he snapped the back of a female Labor party staffer's bra-strap as a "party trick", and other "inappropriate and sexist behaviour". On 27 April 2008 further allegations were published: these included the sniffing of a chair of a female Liberal staffer as well as claims that he crawled around on his hands and knees pretending to be the staffer's husband. Buswell first refused to deny the allegations, The woman later revealed Buswell "was groaning and writhing in sexual pleasure". As well as these incidents, Buswell has been accused by retiring Liberal MLA for
Carine,
Katie Hodson-Thomas, of making sexist remarks to her. MLA for
Roe Graham Jacobs called for a leadership spill motion, which took place on 5 May 2008, but the motion failed and Buswell remained leader. Revelations also came out of Buswell "squirrel gripping" (grabbing the testicles of) Liberal MLA
Murray Cowper in parliament. Cowper did not deny the incident, saying "As far as I'm concerned the matter's dead and it's time for everyone to move on, the media included." Buswell faced a fresh crisis when it was revealed in a
Corruption and Crime Commission (CCC) report on 10 June 2008 that a motion moved in Parliament by his staunchest backer, Shadow Minister for Road Safety
John McGrath, had been provided to him by lobbyists
Brian Burke and
Julian Grill. Burke had written the motion on behalf of a company that sold radar detectors. The CCC report said Mr McGrath's claim he was unaware of Burke's commercial interest in the issue strained credibility. Buswell backed McGrath by claiming that he had been cleared of misconduct while McGrath refused to stand down. Three days later, Buswell sacked the Shadow Police Minister
Rob Johnson after Johnson said he could not serve in the Shadow Cabinet with McGrath as Shadow Minister for Road Safety. Buswell resigned as Liberal leader and leader of the opposition on 4 August 2008. He was replaced by
Colin Barnett. ==Government==