For each general election since 2008, the Herald has undertaken an in-depth project on the person challenging to be Prime Minister.
We call these 'unauthorised biographies' and have so far told the life and times of John Key and Phil Goff - interviewing many of their family, friends and work and community colleagues.
The resulting multi-part feature articles have been rich in archive photographs and documents and imagery never before seen by the public.
They have explored the politicians' upbringings and formative influences, their successes and failures and the values they bring to their jobs as Opposition leader.
We deliberately focus on the challenger because usually they are far less well-known and less familiar to the electorate.