Career
He had previously been an electrician and was Occupational Health and Safety Officer of the Electrical Trades Union. He defeated the sitting Liberal member, Philosophy Barresi, who had held the seat since 1996. The seat had been one of the most marginal Liberal seats in the country for almost three decades.
Barresi led for most of the night, but on the fifth count a large flow of Green preferences allowed Symon to become only the second Labor Member of Parliament in the seat"s 70-year history.
At the 2010 election, Symon faced Barresi again, and was reelected with a slight swing in his favour—again due to Green preferences. At the 2013 federal election, Symon suffered a swing of 3.8% against him and was defeated by Liberal candidate Michael Sukkar.