Author Douglas Murray has exposed US Vice President Kamala Harris for her inauthenticity after she was caught speaking in different accents to different crowds.

In an article for the New York Post, Mr Murray said the vice president and other Democrat powerhouses deserve an Oscar for their performances at the Democratic National Convention in Chicago.

Sky News host Rita Panahi said the vice president must have taken the author’s advice about the Oscar onboard after she switched up her accent during two separate rallies.

“It does not look authentic, it looks horribly pandering,” Mr Murray said.

“It's just another example of the fact that America is trying to work out who this politician is and then not really getting an answer.”