UpdatedThomas CoughlanPolitical Editor·NZ Herald·10 Aug, 2026 08:18 AM3 mins to read‌Prime Minister Christopher Luxon and the two MPs who might be challenging him, Erica Stanford and Chris Bishop. Both have publicly pledged support. Photo / NZME

Discontented National Party MPs hit the phones on Monday, with one MP confirming to the Herald that they had fielded “several” phone calls about a potential leadership change.

The speculation was triggered by Christopher Luxon’s announcement on Thursday he supported an MMP referendum if National wins

- comments that caught many of his own MPs unaware.