David Seymour says the Prime Minister would have a tougher job sacking a minister from ACT than from National.
Luxon stood down Melissa Lee and Penny Simmonds from portfolios last week.
Seymour says it would take a bigger process if Luxon wanted to give the boot to one of his party's ministers.
"What I did say is- if we were going to have that sort of action, then the coalition agreement requires good faith, it requires conversation - and it ultimately requires agreement on these sorts of things."
LISTEN ABOVE
See omnystudio.com/listener for privacy information.
Popular Podcasts
Dateline NBC
Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations.
The Nikki Glaser Podcast
Every week comedian and infamous roaster Nikki Glaser provides a fun, fast-paced, and brutally honest look into current pop-culture and her own personal life.
Stuff You Should Know
If you've ever wanted to know about champagne, satanism, the Stonewall Uprising, chaos theory, LSD, El Nino, true crime and Rosa Parks, then look no further. Josh and Chuck have you covered.