A senior Nationals senator has invited disaffected coalition partners in the Liberals to switch parties but poured cold water on the idea of merging the two.

The Liberal Party is "rightfully going through a process internally" following its catastrophic result at the May election, Senator Bridget McKenzie said.

"They're all seeking to redefine the Menzies legacy for modern Australia, and that's something they've got to do and I wish them all the best for it," she told Nine's Today program on Thursday.

"The idea that there's a federal LNP on the way isn't the answer."

But disaffected Liberals were welcome to join the Nationals.

"If anybody across parliament shares our values, we'll always welcome them with open arms," Senator McKenzie said.

Former Queensland Premier Annastacia Palas

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