While the Nationals and Liberals are moving towards merging into a single party in Queensland, Mr Truss said the prospect of going it alone at a Federal level must be considered.

His view is at odds with that of senior Liberals and other Nationals.

Far from a Coalition split, they are forecasting the two parties in NSW and Victoria, as well as federally, could be merged into a single entity by the end of this year.

"If it happens in Queensland the pressure for it to happen elsewhere will be remorseless," a senior federal Liberal said.

Mr Truss told the Ten Network yesterday that the future of the Coalition would hinge on the outcome of a review into the party's future being conducted by the former Deputy Prime Minister and Nationals Leader John Anderson.

"We're looking at the potential to go it alone, or have a stronger role or a different role within the Coalition," he said.

"All options are on the table, as they ought to be following election defeats."

Asked whether dismantling the Coalition was a possibility, Mr Truss repeated: "All the options are on the table and that's as it ought to be when you're having a look at the future of the party."

Mr Anderson's review is due to be released soon.

Sources believe it will recommend the merger of the two parties in NSW and Victoria, as is happening in Queensland.

One source said it was believed Mr Anderson would recommend The Nationals either merge or face extinction.

But Mr Truss did not appear keen. He said the Liberals and Nationals in Queensland had similar constituencies.

"Certainly in NSW and Victoria the National Party has identified itself much more with rural and regional areas, and each State will have to look at the issues on its merits."