Bit More,
FOUND Curran at Coonamble 1903, will edit shortly.
EDIT 1
Electoral roll, Seat of Darling, polling place Coonamble (electorate borders Dubbo's electorate)
line 323, CURRAN, Thomas, male, shearer, at Coonamble.
edit 2
NO sighting of Kate at that polling place,
BUT
1903, Seat of Darling, polling place Hermidale
line 18, CURRAN, Michael, male, labourer
Kate, a cook - "wild" speculation - a shearer's cook per WW1
EDIT 3
NOT sighted Kate, but
1903, Seat of Darling, polling place Yantabulla
Line 12, CURRAN, Thomas, male, shearer
Will try other electorates, and will make new post for any results. I searched for "K" and "C" Nolan as well as Curran also did not spot Nolan, J H either.
JM