Whanganui MP Chester Borrows has travelled to Timor-Leste this week to be part of an international team scrutinising this weekend's parliamentary election.

Mr Borrows, along with Labour's Clayton Cosgrove - both due to retire from Parliament - were chosen to travel to the South East Asian nation because they were not involved in this year's New Zealand election.

Twenty-three parties are registered to contest the election of 65 members to the Timor-Leste National Parliament using a closed proportional representation system with a threshold of 3 per cent.

Timor-Leste, also known as East Timor, has a population of 3.5 million and Francisco Guterres was elected president in May.

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"It's possible to take our smooth-running democracy for granted," Mr Borrows said.

"I believe that it's a measure of the sound democratic systems and processes we enjoy in New Zealand that we are invited to observe and give feedback on their procedures."

Mr Borrows will be back in New Zealand for the resumption of Parliament next Tuesday.