Members of Parliament spent $1.3 million more on travel and accommodation in the period covering the general election than they did for the same months the previous year.
MPs spent $3.15 million on travel from October to December last year.
Spending in the same quarter in 2010 was $1,79 million.
Electoral law states MPs should not use taxpayer funding for electioneering.
Highest spending MP for the quarter was the Te Tai Tokerau MP and Mana Party leader Hone Harawira who spent $54,961.
Next highest spender was the Labour Party leader Phil Goff, who spent $32,566.