just think the Liberals need that Abbott and Dutton type, Morrison is not that type of hard right hence plenty of disenchanted coalition voters have gone to UAP and One Nation and liberal Democrats. Remember by doing that they are not wanting to appeal to the left or hard left faction if you are a Labor or a green extreme left well you are never voting for coalition anyway so that should not matter much likewise greens know they dont appeal to a conservative voter. They do need to be careful agree that they do not scare of the Labor swing voter
With Turnbull in power the coalition tried to have a bet each way and what resulted was right voters walking away from the party, even with Morrison they have not got them all back