US President Donald Trump has told people in the state of North Carolina to vote twice in November’s election, despite this being illegal.

Mr Trump suggested voters vote once in person and a second time by post, in order to stress-test the system.

The president has frequently made false claims that postal votes are vulnerable to significant electoral fraud.

“Let them send it in and let them go vote,” he told North Carolina broadcaster WECT-TV on Wednesday.

“And if the system is as good as they say it is then obviously they won’t be able to vote (in person).”

After President Trump made the comments, North Carolina Attorney General Josh Stein tweeted that he had “outrageously encouraged” people in the state to “break the law in order to help him sow chaos in our election”.