Former Deputy Prime Minister Barnaby Joyce and his partner Vikki Campion are set to give an exclusive interview to Seven's Sunday Night program after inking a deal with the broadcaster worth a reported $150,000.

Mr Joyce and Ms Campion, his former media adviser, have been at the centre of a publicity storm since news of their relationship broke on February 7. Their son Sebastian was born at Armidale Hospital on April 16.

Public scrutiny of the pair intensified after they granted an exclusive and unpaid interview to Fairfax Media, published on February 21, in which they appealed to politicians and the public to "move on".

At the time, Mr Joyce was still clinging to the deputy prime ministership and the Nationals leadership, but he resigned from both posts two days later. The backbench move saw his salary drop from $416,000 to about $200,000 a year.

Seven paid $150,000 to secure the interview rights with the couple for its Sunday Night program following a bidding war with Nine's 60 Minutes, News Corp reported.