I spoke at Parliament House recently, alongside Ian Harris, the clerk of the House of Representatives. He asked the following question: "Who was the last member of the House of Representatives to cross the floor and vote against their own party?" Answer over the fold.
Answer: On 25 August 1988, Phillip Ruddock voted against the Coalition position on the issue of race and immigration policy. No-one since then has crossed the floor, though there have been occasional free votes.