Billy, they lost their mandate when they lost the seat of Wentworth after they stupidly knifed Malcolm Turnbull and from then basically avoided having normal parliamentary sittings because they had lost their majority.
Heavyweights like Bishop, Pyne, Keenan, Odwyer, Ciobo, Scullion have jumped ship and Julia Banks defected.
A Liberal Party in crisis caused by the Abbott/Dutton camp imo.