A Deputy Prime Minister swap is on the cards this week.

NZ First leader Winston Peters and ACT Party leader David Seymour are sharing the role as part of the Government's coalition agreement.

Peters serves as the Deputy until Saturday this week.

Seymour says he's already filled in the role before.

"It doesn't actually change my job day-to-day, it means I'll spend a bit more time covering for Chris if he's out of Wellington or out of the country."

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