More details on the incoming governing trio are expected to come soon. 

National, ACT, and New Zealand First have agreed on a deal which will be signed in Parliament today. 

It'll have the parties' policy agendas, details on who's in and who's out of Cabinet, and who's becoming the Deputy Prime Minister. 

Herald political reporter Adam Pearse told Kate Hawkesby that we've apparently been in the final stages for more than a week now. 

He says they're expecting statements of support from the three parties throughout this morning. 

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