The electorate stretches north-eastwards from the Gawler River and Gulf St Vincent in the south, and includes many of the agricultural areas of the Clare and Gilbert Valleys.

It covers a total of 12,921 km2 (4,989 sq mi) and takes in the towns of Auburn, Clare, Mintaro, Port Broughton, Saddleworth, Snowtown and Riverton.

After the Playmander was significantly diluted by the 1970 electoral reforms, Frome was moved into more conservative-leaning rural areas around Port Pirie, turning it into a notional Liberal and Country League (LCL) seat.

O'Halloran's successor, Tom Casey, believed this made Frome impossible to hold and successfully transferred to the Legislative Council.

Labor did however win 50.1 percent of the two-party vote at the 2010 election, but the seat was retained by incumbent independent Geoff Brock.

[5] Brock retained the electorate at the 2014 election with a slight increase to his margin, while the Liberals won 60.8 percent of the "traditional" two-party preferred vote.