Mr Abbott is in Tasmania today campaigning with Opposition Leader Will Hodgman.

Mr Abbott said he had discussed "the importance of actually getting the NBN happening" with Mr Hodgman, but would not say whether he thought the Federal Government's decision not to continue the full fibre to the premises rollout throughout Tasmania was a broken promise.

When asked, he said: "We will keep all of our commitments, because I want to lead a government which is competent and trustworthy, and the essence of political trustworthiness is to keep your commitments."

"So all of the commitments that we made pre-election will be kept."

Premier Lara Giddings has said the proposed switch to a fibre-to-the-node rollout plan at the end of this year was a broken promise, claiming Tasmanians were led to believe that they would receive the same NBN rollout under either Labor or the Coalition federally.

But Communications Minister Malcolm Turnbull said delays and cost blow-outs made continuing the previous rollout plan untenable.

"The important thing is the NBN will be delivered here in Tasmania," Mr Abbott said.

"I just want to make the general point: are you going to get the NBN faster by having a fight with the Federal Government, or are you going to get the NBN faster by working with the Federal Government?

" Will Hodgman has proved, even as Opposition Leader, that he can work with the Federal Government.

"Lara Giddings is boasting about the fact that she wants to fight with the Federal Government.

"If you want to get things done, you've got to work cooperatively with people and that's what will happen if Will Hodgman becomes premier of Tasmania."

Mr Abbott and Mr Hodgman toured Tas Live Abalone in Mornington this afternoon ahead of a Liberal Party gala fundraiser in Hobart tonight.