In 2012, Gash was directly elected as Mayor of Shoalhaven in the south-eastern coastal region of New South Wales.
Before entering politics she was a Regional Manager with the Tourism Commission of New South Wales, a guest house co-proprietor,[1] and a Councillor of the Wingecarribee Shire Council.
At the same time, she announced her intention to stand for the mayoral position at the Shoalhaven City Council elections, due to be held in September 2012.
[6] She sought re-election as mayor of City of Shoalhaven at the 2016 NSW Local Council Elections, but lost her position following a massive swing, which saw her lose about half of the vote she won at the 2012 election.
In the 2019 federal election contest for the seat of Gilmore, which she formerly represented, Gash, together with her successor Ann Sudmalis, endorsed the National Party candidate Katrina Hodgkinson[8] over the Prime Minister Scott Morrison's "captain's pick" candidate for the Liberal Party, Warren Mundine.