ACT leader Rodney Hide is considering moving to Wellington temporarily with fiancee Louise Crome because the couple are to have a baby.
Mr Hide, 53, and Ms Crome, 32, a retired squash player, are to marry in December. The baby is due at the end of March.
"We are over the moon excited," Mr Hide said. "It just ends the year on a high note."
Mr Hide is MP for Epsom and Minister for Local Government.
"I try and spend as much time at home as I can work allowing...we are actually thinking because of the nature of my job we might locate to Wellington because we figure that it might more likely that I am in Wellington."
Mr Hide said if they decided to move to Wellington it would just be until the baby was born.
He has bought a house in the city.
Ms Crome has just finished an MBA and may work during the pregnancy.
Mr Hide has a son, 21, who lives in Hong Kong.
Who do you think won Key v Cunliffe's second debate?Related story: Leaders debate reveals more even contest