The Finance Minister says the planned independent inquiry into Te Pati Māori's data use is important for everyone.

It's been alleged information collected at Manurewa Marae was used to help the party's election campaign, which Te Pati Māori denies.

Minister Nicola Willis says it's important to ensure Government agencies have the proper processes in place to protect people's information.

"In this case, the Te Pati Maori allegations, the allegations of Manurewa Marae - they all relate to New Zealanders' personal information." 

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