Something has changed in Australia. The voters of Farrer may tell us what, and how much

Farrar candidates (clockwise from right) David Farley (One Nation), Raissa Butkowski (Liberal), Richard Hendrie (Greens) and Michelle Milthorpe (independent) are taking on a divided electorate. Composite: Guardian Design

On the main strip of Holbrook, Marcia and Chris Wright are having an afternoon beer.

The unassuming town sits almost halfway between Sydney and Melbourne, hundreds of kilometres down or up the Hume Highway.