You seem to casually neglect the fact labor also lost some of its base to record its lowest primary vote EVER!
Typical socialist left biased distortion of facts to feed the d sired agenda.
Funny thing is you will find most righties will acknowledge and agree that their base is diminishing, in conjunction with the left also, but you left wingers will totally bury that fact in your subconscious. Again it never c ashes to amaze me the lefties capacity to totally ignore facts, if it doesn't suite them. Rather child like really!