Tama Potaka with National Party leader Christopher Luxon. Photo: RNZ / Andrew McRae
Spending by candidates in last year's Hamilton West by-election was just under $200,000.
The Electoral Commission has released the 12 candidates' returns.
National's Tama Potaka, who won the seat, spent the most - $54,000.
He was followed by Labour's Georgie Dansey, on just over $46,000.
Former Labour MP Gaurav Sharma, who stood for the New Zealand Momentum Party and came fourth, spent just under $45,000 on his campaign.
All candidates used the money on advertising.
The spending limit for parliamentary candidates is just over $61,000.
