This is a historic and crushing defeat for John Key and the National Pary. Winston Peters is 4,015 votes head of his rival, with 15,359 votes. This is 54% of the vote.
Northland decides: Winston Peters takes by-election
The votes are in the Northland by-election and Winston Peters has romped home.
Our political team are bringing you all the action and reaction from the candidates' camps.
Political editor Tracy Watkins is with NZ First leader Winston Peters, and senior reporter Paul Easton is at National candidate Mark Osborne's camp. Stacey Kirk will be monitoring the official results as they roll in.
Stay tuned, we'll bring you all the updates, analysis and reaction to the decision that could change the makeup of Parliament.