The announcement that former Liberal minister Alan Tudge will resign from the parliament marks the end of a controversial political career, but it's also throwing open new challenges for the party, and opposition leader Peter Dutton. Speculation is swirling about who will be selected to run for Tudge’s seat in Melbourne at the upcoming by-election, and while the pressure is on for the Liberal party to pick a woman, factional infighting means nothing is guaranteed. So, can the Liberals retain the seat of Aston, which it barely clung on to at the last election? Or is the seat within Labor’s grasp? Today, Columnist for The Saturday Paper Paul Bongiorno, on the political test looming in Aston.  Socials: Stay in touch with us on Twitter and Instagram Guest: Columnist for The Saturday Paper, Paul Bongiorno.