 After that time until April 2007, Lucas served as Shadow Treasurer, Shadow Minister for Industry and Trade and Police, and between 2005 and 2006 was also Shadow Minister for Economic Development and Science and Information Economy.Between 2002 and 2007 Lucas held the position of Leader of the Opposition in the Legislative Council.The appointment of Lucas, a member of the upper house Legislative Council, as Treasurer was a break in convention as previous Treasurers had been members of the lower house the House of Assembly.