Three in four Republicans believe the media invents stories about Donald Trump, a new poll has revealed in a sign his “fake news” campaign is working.

The figure is even higher for those who strongly approve of how the US President is performing, with 85 per cent of that group saying the same.

The findings come after a relentless campaign by Mr Trump against the media in the nine months he has been in office.

His criticism dates back to his election campaign, when reporters were heckled and booed by Mr Trump’s supporters as he pointed them out at rallies.

The US president renewed his attacks on the media on Tuesday during a round of interviews with talk radio shows.

"Actually, dishonesty in the media is one of the things that surprised me the most,” Mr Trump said, picking out cable networks with whom he has repeatedly clashed.