The National Party's president has told members its board did not endorse demoting Simon Bridges, as claimed by Judith Collins.

National Party president Peter Goodfellow
National Party president Peter Goodfellow Photo: RNZ / Dom Thomas

Collins released a statement last night, saying she was stripping Bridges of his portfolios over a lewd comment he made to fellow MP Jacqui Dean, with "unanimous support" of the board.

Party president Peter Goodfellow said in a statement the board had unanimously supported a first step in seeking further information from both parties before drawing any conclusions.

He said no specific penalties or actions were discussed, agreed or endorsed by the board at its meeting yesterday, beyond support for an investigation.