Writer Jamie Whyte looks set to become the new Act leader tomorrow.
Dr Whyte and rival candidate John Boscawen, the party president, are due to appear in a private session with the nine members of the Act board in Auckland today.
David Seymour, who wants to stand in Epsom and supports Dr Whyte for leader, will also appear.
The board is tipped to accept the advice of party heavyweights that the position of leader and Epsom candidate should be held by the same person.
Dr Whyte announced on Thursday that, after seeking advice, he would also seek the nomination for Epsom, the seat Act has held since 2005.