The fresh-faced businessman turned politician hit the stage at the Iowa State Fair during a campaign stop Saturday — and he wowed the packed crowd by belting out Eminem’s 2002 hit, “Lose Yourself.”

Check out the video … Vivek just kills it, grabbing the mic and spitting out the lyrics Slim Shady-style as the song played over the sound system. The fans loved it ... and some probably thought Vivek gave Em a little run for his money as a hip hop artist.

Before launching into his performance, Vivek revealed to the audience Em’s tune is his fave on the campaign trail; he always strolls out on stage to it, but this is the first time everyone has gotten a good hard look at Vivek's musical chops and he's pretty kick-ass.

Vivek is also kicking butt in the polls ... some recent assessments put Vivek in third place in his bid for the 2024 Republican presidential nomination.