30% of the voting public would probably vote for TA. the other...

30% of the voting public would probably vote for TA. the other 70% will refuse. So ask yourself whether you want a Turnbull govt and keep 66% of TA's policies or get spend-a-lot Bill and keep 0% of TA's policies.
TA won the 2010 election and lost by being incapable of negotiating with Windsor and Oakshot.
He was a great opposition leader because all he had to do was say "no" all the time, easy. Spend-a-lot is doing the exact same now and look how dumb he is.
Turnbull will be replaced half through his term if he wins anyway. Like TA he is very divisive.
The biggest problem for Mal is that by living within his means he is faced by spend-a-lot who has promised to go on a dizzying cash splash.
Greece had successive govts who spent a lot (of borrowed cash) and ended up broke. Mal won't win unless he has his own cash splash.