At the 2004 Federal election, Jackson faced a challenge from first-time election candidate Stuart Henry. During the election campaign, Henry's electoral team sent campaign materials to households in the electorate in which Henry was described as "Member for Hasluck", sparking complaints to the Australian Electoral Commission (AEC) by the WA Labor Party. Jackson said it was part of a "dirty tricks" campaign by Henry, even though the AEC concluded that the letters were not directly misleading. Jackson was defeated by Henry.