Christchurch's Mayor is supporting TOP's policy of lengthening local government terms to four years

Opportunities Party governance policy announced today includes lowering the voting age to 16 - and shifting parliamentary and local terms to four years.

It would also remove GST on rates.

Phil Mauger says three-year terms are too short.

He says you've only just got your head into it and then in the third year, you have to run again.