English said that the election result was legitimate but unusual, and posed issues for the Labour Party.
"This is a Prime Minister who's the first one in 100 years who lost the popular vote, and lost it by quite a bit. And in making decisions about the future direction of this country, the Government will need to take into account those circumstances."
The issue of National's leadership is expected to be discussed at a caucus meeting today, but English declined to say whether he expected to continue as leader.
"That's a matter I'll first address with the caucus. I've been slightly overwhelmed by the amount of support in the days since that announcement [last Thursday].
"My measure of talking to a lot of them in recent days is they're more focused as a group on how to ensure that the huge gains made in this country can continue, and how to hold to account a Government that's been put together in an unusual way."
It is understood that the caucus will strongly endorse English to continue as leader.
English declined to comment on the possibility of senior MPs resigning, but added that
"Steven [Joyce] has indicated publicly that he'll be staying around, and that's great."
English told Newshub that National wanted "to see New Zealand continue to benefit from a strong economy. We also want to hold them to account on issues outside the economy".
"We'll get to see today whether they actually do have a plan for reducing poverty, whether there is a plan for lifting incomes."