Best lines from the leaders' debate

WHAT PRIME MINISTER MALCOLM TURNBULL SAID:

* On childcare: "As a grandfather with a grandson who goes to childcare, because his mum's working as a teacher, I understand very much the challenges that you face and we're addressing that."

* On bulk-billing: "The concern that has been expressed about patients who go to have their blood tests done ... being charged extra, not being bulk-billed, that concern is gone."

* On reaching a budget surplus: "A budget has to be fair, and one of the most important elements of fairness is not leaving a mountain of debt for our children and grandchildren to pay for."

* On banks and rejecting the need for a royal commission: "Here you've got Bill who wants to be prime minister of Australia who says you should line the banks up as though they are accused of a crime, as though they are all criminals."

* On Labor's negative gearing policy pushing up rents: "Anyone with commonsense knows it will."

WHAT OPPOSITION LEADER BILL SHORTEN SAID:

* On Gonski school funding: "Anyone who tells you money doesn't matter in education is selling you a pig in a poke."

* On banks and the need for a royal commission:" I'm sure they went home and changed their practices after a lecture from you (Malcolm)."

* On childcare: "Childcare affordability is a giant handbrake on people being able to return to work."

* On privatisation: "The pendulum has swung too far."

* Responding to the PM's claim that Labor's negative gearing policy will push rents up: "Please, a crocodile wouldn't swallow that."

WHAT THE UNDECIDED VOTERS THOUGHT:

* "I thought most of it was what we've heard already." - Lee Elsdon, still undecided.

* "It wasn't a very negative campaign which is what Tony Abbott had, which turned me off the Liberals quite a lot." - Peter Maloney, still undecided.

* "I think they were both quite genuine but I think that's the nature of their job. They have to say things that people want to hear." - John D'Silva, still undecided.

* "I think we saw a different side to Bill Shorten which I've never seen before. He was more honest and answered all the questions well." - Nada Macdessi, believes Shorten was slightly better in debate.