Todd Muller and his supporters have already celebrated victory ahead of final results being announced tonight.
Mr Muller thanked the crowd of about 150 as he gave a speech paying tribute to his wife Michelle and their three children.
He said being Bay of Plenty's MP was his dream job.
"It's something I've wanted from a long time ago," he said.
"When I was 10 years old I wanted to be president of the United States but this is way better."
Mr Muller was greeted with huge bursts of applause from the crowd.
"I've become who I am because of this community.
"You are very much part of my family as we move forward to the next few years.
"Whatever role I get asked to do as part of National... you can be sure I Wil give it everything."
"It has been a real long campaign this time, compared to the 2014 campaign.
"It has been really intense and personally really intense in the middle for me.
"There's not much left in the tank. Which is how it should be really. While it's a campaign, you do the best you can and leave it for the voters of Bay of Plenty to decide."
Muller's supporters booed at the television when New Zealand First leader Winston Peters appeared.
Mr Peters once represented National but "jumped ship", Mr Muller said.
Earlier in the night, Muller said he was "quietly confident".
"The feedback has been really positive not just for me but for the party.
"I think the election will have a big turnout."
When asked how this campaign compared to his first in 2014, Muller said the change was huge.
"The big difference is I'm an incumbent MP so when I knock on the door people see their MP there. Even if they are not voting for us, they are impressed we are there and really interested in asking questions.
"Last time it might have taken me half an hour to door knock a street. Now it takes about two hours because people really want to talk to me. Even if they don't want to vote for me.
"The other guys I door knock with say 'Todd you talk too much' but I listen to feedback and most people give me that - what they think is working well and what's not.
"That's very much the difference this time."
Dave Barker has always been "true blue" supporter but especially so of Muller.
"He's out and about and in the community," he said. "He's really involved."
Barker said Muller was personable and it was obvious he really cared about his community.
"And he has been in business before. I work for businesses all of the time and I can talk to him about that stuff. He's switched on in a job where you have to be not just as a politician but as a local here as MP. I respect that."
Claire Lander said Muller was very clear and precise as MP.
"He has got a lot of empathy and he's a family man. He's quite relatable to a lot of people and is just a genuine good guy."
National MPs Simon Bridges (Tauranga), Todd Muller (Bay of Plenty) and Todd McClay (Rotorua) have retained their seats, while Waiariki has changed hands from Te Ururoa Flavell (Maori) to Tamati Coffey (Labour).
With 98.5 per cent of Bay of Plenty votes counted, Muller has 22,268 votes compared to Angie Warren-Clark (Labour) on 9278 and Lester Gray (NZ First) on 3539 votes.