Few years ago I got onto a flight in Whangarei for Auckland - Bandeirante I think. During an election campaign, maybe 2000.
Sitting up near the front was Winston Peters and across the aisle an opposing candidate.
Captain comes to give the pax briefing, does his spiel and then looks at Peters and the other guy: "you two shut up, don't look at each other, don't talk to each other and keep your hands to yourselves". Turns and gets into his seat and we're off.
Nobody batted an eyelid!
MJH