ABC Online | Debate over cause of high drug use in WA 9news.com.au Western Australia's police commissioner has questioned Premier Colin Barnett's claim that drug use is rife in the state because of high incomes. Premier Colin Barnett made the assertion when asked about high drug usage rates despite his party's ... WA election: 'Aggressive' focus on credibility in only leaders' debate Tame WA election leaders' debate shows no clear winner #Debate2017: Colin Barnett and Mark McGowan face off |