A former leader of the Green Party, Jeanette Fitzsimons, says she was "deeply distressed " her party supported the so-called waka jumping bill to its first reading and she hopes wisdom will prevail.
She spoke about the internal dissent and crisis within the Green Party before the last election over the admission by co-leader Metiria Turei of historic benefit fraud.
She appeared before the justice select committee to speak against the Electoral (Integrity) Amendment Bill, which allows a party leader to oust an MP from Parliament with the support of two thirds of the caucus.
"Dissent is a valuable part of the political process, " she said. "Without it, MPs are just clones of their leader."
Referring to the Greens' internal strife before the last election when MPs Kennedy Graham and David Clendon withdrew from the party list because they could not persuade Turei to resign, she said she supported their right to dissent.