He served as the ABC 's North America correspondent until 1988 , when he became the ABC 's chief political correspondent in Canberra .
Middleton was involved in the transformation of radio station 2JJ into the national triplej brand , networked nationally around Australia .
Middleton served as the ABC 's North America correspondent until 1988 , when Middleton became the ABC 's chief political correspondent in Canberra .
Middleton was involved in the transformation of radio station 2JJ into the national triplej brand , networked nationally around Australia .