A doctored political broadcast clip claiming the former US First Lady Michelle Obama is trans and called “Big Mike” has blown up online, despite being fake.

A clip of CNN’s political director David Chalian has been edited so that he refers to the 60-year-old, who served as First Lady from 2009 to 2017, as “Big Mike.”

The segment sees Chalian discussing the results of a CNN flash poll about the presidential debate between US President Joe Biden and disgraced former President Donald Trump on the 27 June.

A spokesperson for CNN said in an email that the video is “fake” and “has been altered”, Reuters reported.

Obama, the wife of former President Barack Obama, has repeatedly been the target of right-wing hate.

In the CNN broadcast, Chalian says: “’Who won the debate?’ We asked the debate watchers in our instant poll and the answer is a resounding, ‘Donald Trump did.’”

“67 percent of debate watchers in our poll say Donald Trump won the debate tonight and Joe Biden, 33 percent say he won the debate tonight.”

The video then reaches the edited section where audio has been doctored so Chalian says: “I mean, guys, at this point – I don’t give a sh*t if they bring out Gavin Newsom, or maybe Hillary Clinton, or even Big Mike. I mean, Michelle Obama. Sorry, I don’t know why I said Big Mike.” You can see the altered clip below: