The safe seat of Secret Harbour was WA Labor’s to lose in the by-election this weekend, and they deserved to lose it.

The surge of One Nation in successive polls and the party’s lower house success in South Australia earlier this year has turned Secret Harbour into a genuine three-way contest.

Secret Harbour candidates met voters ahead of the crucial WA byelection, which could show how much of a political threat One Nation poses if they secure the seat from Labor's…