Judith Collins is rejecting reports of trouble in the ranks after National's annual conference in Auckland.

The party has taken another hit with former Speaker David Carter has resigned from the party's board following the re-election of Peter Goodfellow as president.

Party leader Judith Collins had to front up to members only days after ACT's David Seymour surged ahead of her in the preferred Prime Minister rankings.

Collins told Mike Hosking there's no substance to media reports her leadership is in doubt or that she was absent for much of the conference.

"I was there almost all of Friday afternoon and night, all of Saturday from 7 in the morning til 9 at night, and the same sort of thing yesterday until the end of the conference."

Collins says the speculation from the media claiming her days as National Party leader are numbered is never right.

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