The National Party says Meka Whaitiri's situation raises serious questions.

Speaker Adrian Rurawhe made Whaitiri an Independent MP after she changed parties and he didn't invoke the waka jumping legislation.

National Shadow Speaker of the House, Michael Woodhouse, says the Speaker's correspondence with Whaitiri, which led to his decision, should be released.

Woodhouse says Whaitiri has no moral authority to stay in her Ikaroa-Rawhiti seat.

"She should have done what Winston Peters did over 20 years ago- nearly 30 now- and Tariana Turei in 2004. Resigned and sought a new mandate."

LISTEN ABOVE

• Meka Whaitiri remains an MP- 'waka-jumping' law not triggered, Speaker clarifies
• Whaitiri remains Māori caucus co-chairwoman
• Barry Soper: Speaker Adrian Rurawhe's refusal to release Meka Whaitiri correspondence doesn't pass sniff test