Prime Minister Bill English is following the practice of his predecessor and taking a week's holiday before the election.
The election is in just 10 weeks' time.
National's campaign manager, Steven Joyce, said today it was the right thing to do.
"As one who has just had a horrendous cold, I think taking a few days and building up a few Zzzz's ahead of the nine weeks to go is probably a good idea," Joyce told reporters at Parliament.
Sir John Key had a holiday in Hawaii shortly before the 2014 and another in 2011.