John Key's had to move a planned media conference out of the centre of Palmerston North, after being confronted by rowdy protesters.

A group of about 15 people, some of them carrying Internet Mana flags, chanted '"John Key out" as the National Party leader stepped off his campaign bus in The Square.

Another group of teens yelled at Mr Key, that they were sick of him making his rich mates richer while they were poor.

John Key was in Palmerston North to promote National's candidate, the local mayor Jono Naylor, who is tipped to unseat Labour's MP this weekend.