Palmer United Party senators are likely to split over time because of a lack of a coherent political view, a fellow new senator has predicted.

Palmer United Party senators will break ranks over policy differences, a new crossbench senator has predicted.

The party formed by billionaire Clive Palmer will have three senators after July 1 – Glenn Lazarus from Queensland, Jacqui Lambie from Tasmania and WA’s Dio Wang.

PUP also has an agreement with Victorian senator-elect Ricky Muir, from the Australian Motoring Enthusiasts.

Liberal Democratic Party senator-elect David Leyonhjelm said he had met three of the four senators and could work with them on legislation.

But he added: “I don’t really expect they will stay of a single mind indefinitely.”

“They will start off with the idea of having a party position on things, but they are very different people.”

He said the PUP senators had “no coherent outlook on life”.

“They just happen to be unhappy with the Liberal National government, not inclined to go with Labor and were looking for an alternative. PUP was available and they went with it,” the NSW senator-elect said.

“I don’t think that is sufficient to bind them together.

“I am expecting them to do their own thing, if not immediately then before too long.”

The government may need to negotiate with Mr Leyonhjelm to enact some of the recommendations of the national commission of audit.

He said the audit did not go far enough, but would give the government some political cover when it came to the May 13 budget.

“(The audit report) will appear really extreme and the government will come along and not do half the things the commission of audit recommended,” he told Sky News.

“And they will say: `Look at us, we are really nice guys compared to those awful audit commission people’, and people will say it could have been worse.

“But the economy won’t be fixed anywhere near as fast as it should be.”