Labour is handing out free copies of the Hollow Men film as the party seeks to embarrass new ACT leader Don Brash.
The film is based on Nicky Hager's book of the same name which covered the sometimes tawdry tales behind the National Party's 2005 election campaign, drawing on 475 emails between then National leader Don Brash and other political players.
Dr Brash resigned as party leader in November 2006, the same month the book was published.
Labour MP Trevor Mallard gave copies to the Parliamentary Press Gallery and other journalists who wanted a copy. More than 100 had been given.
His local electorate committee was paying for them and they were getting a discount price. The spending would not come out of election spending as it was outside the three month campaign period but Mr Mallard said he would check that.
"I just think it's really important that people understand what is driven John Key and Don Brash, their values, the people who support them, the way they've been supported and the lies that the New Zealand public have been told."
Dr Brash last week ousted Rodney Hide as leader of ACT.
NZPA