Political aficionados can rest easy - Judith Collins' planned book might not be able to reveal all that much. 

The National MP has revealed she is writing a new book, telling Newshub that it will "not be boring" and will cover her 17 years of her political career. 

Collins did play down whether the book with dish a lot of dirt, saying it would focus on "how things are done", noting that she has kept "very good records".

However, NZ Herald's political editor Audrey Young told Andrew Dickens that cabinet regulations will likely restrict just how much Collins can reveal. 

"I think it will be a challenge to write something that is really interesting without breaching cabinet or caucus confidentiality." 

Young suspects that her interesting backstory will fill in those gaps, but that the Chisholm Affair will likely play a huge role.

However, she says Collins will have to avoid playing the victim. 

"She doesn't fit the victim mould."