The former president of Federated Farmers is to stand for the ACT Party at the general election on 26 November.
Don Nicolson is the third candidate with no significant prior association with ACT to join, following Don Brash and John Banks.
The Southland sheep and beef farmer led the farmers' lobby group for three years will stand in the Clutha Southland electorate held by Deputy Prime Minister Bill English.
ACT leader Don Brash says Mr Nicolson will be the party's agriculture spokesperson.
Mr Nicolson says he intends to campaign hard against the Emissions Trading Scheme and the Resource Management Act.
He says ACT represents a lot of his views and is where the National Party used to be.