Anton "Tony" Lazzaro has been found guilty on all six counts of sex trafficking of minors.
The jury took just over three hours to decide Lazzaro's fate.
Prosecutors allege he used his wealth and political status to lure the underage girls to his luxury condo in downtown Minneapolis where he then had sex with them.
The trial included testimony from some of his alleged underage victims, his original co-defendant who took a plea deal and testified against him, and from Lazzaro himself.
The sentencing guidelines could be between 15-24 years, but the judge could decide on more time served.