Parliament's Speaker is considering a rule change for MPs with babies after Labour MP Nanaia Mahuta was required to be in Parliament with her five-month-old baby until midnight last week because Labour needed her there so it could cast its full tally of votes during urgency.
Parties need at least 75 per cent of their MPs in Parliament to cast all of their votes, and Ms Mahuta's usual care arrangements did not extend to Friday so she took her baby daughter with her, including going to the Debating Chamber at one point, but left when the baby started crying.
She has asked the Speaker to consider new rules for nursing mothers, saying they should not have to be at Parliament later than 9pm without affecting the party's voting numbers or taking leave off other MPs.
She also believed it was time Parliament developed more formal, wider guidelines for mothers of young children, including rules on taking a baby into the House.
Speaker David Carter said he would talk to the business committee about allowing mothers of young babies to be away on occasion without affecting their party's leave quota.