New Zealand First appears set to confirm a new MP today.
Leader Winston Peters is scheduled to hold a press conference in Invercargill this afternoon.
Invercargill is the home town of Ria Bond, who is the 12th candidate on New Zealand First's list. The party currently has 11 MPs.
Mr Peters won the Northland byelection last month, taking a seat off National.
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Under electoral rules, he must resign as a list MP to allow his party to bring another MP into Parliament.
The Speaker's office said this morning they had not received any notice of resignation from Mr Peters.
Ms Bond is a former hairdresser and now works as a Parliamentary staffer.