Two leading No campaigners, Warren Mundine and Jacinta Nampijinpa Price, have sent legal letters threatening to sue The Australian Financial Review over a political cartoon published earlier this month they say likened them to Nazis.

The image, produced by cartoonist David Rowe and published on Friday, October 6, shows Mr Mundine, Senator Price and Opposition Leader Peter Dutton walking past a series of red, black and yellow flags emblazoned with the word “No”, where the letter “o” resembled Adolf Hitler.