 Waterfall Gully is part of the state electoral district of Bragg , which has been held since 2002 by Liberal MP Vickie Chapman . In federal politics , the suburb is part of the division of Sturt , and has been represented by Christopher <unk> since 1993 . The results shown are from the closest polling station to Waterfall Gully — which is located outside of the suburb — at St David 's Church Hall on nearby <unk> Road ( Burnside ) . Both <unk> have traditionally gone to the Liberal Party , and Bragg in particular is regarded as a very safe Liberal seat . However , in the 2007 federal election , a strong swing towards the Labor Party and their candidate , Mia <unk> , resulted in the electorate transforming from a " safe [ federal ] Liberal seat into a marginal one " . 
