The father-of-one swept to a landslide victory as the incumbent at the last election, receiving more than twice as many votes as his sole fellow candidate Bill Woods.
Broughton said he loved his job as mayor and was proud of the work Selwyn District Council had done in the five years he had served in the role.
"When I first took on the role, it was never going to be for less than nine years.
"I’ve always felt like in any role like this you need to be able to understand processes, understand relationships ... that doesn’t happen over a short period of time,” he said.
A key piece of work that would continue in the next three years was strategic planning for a district population of 300,000, which may not happen for 100 years or more.
The district’s population is 71,500, and is forecast to rise to 89,600 in 10 years.
"The recent growth we have had in has been enabled by planning ahead of time, infrastructure requirements, working out how we want it to be funded.
"If you can do those early, then you are not chasing your tail,” he said.
Broughton first became the district’s mayor in the hotly contested elections of 2016, after missing out in 2013 when he and four others stood against the incumbent Kelvin Coe.
Broughton had two consecutive terms as a district councillor prior to winning his first mayoral race.
He was aged 35 at the time and became one of the youngest mayors in the country. He lives in Darfield with wife Liz and their four-year-old daughter Elliott.
