When Labor came to power in 1989 , Mackenroth became a minister under the premiership of Wayne Goss .
When Labor came to power in 1989 , Mackenroth remained so until the downfall of the Goss government in 1996 .
When Labor came to power in 1989 , Mackenroth became a minister under the premiership of Wayne Goss and remained so until the downfall of the Goss government in 1996 .