Platner was subject to one of the most intense smear campaigns in the history of modern electoral politics. Despite a platform that would make him one of the Senate’s most left-wing members (along with Bernie Sanders and, if he wins his own race, Abdul El-Sayed), he was widely accused of being a secret Nazi
Smear campaign? What part of him having a nazi tattoo and explicitly acknowledging what it was many years before getting into politics and then lying about it is a smear? All of this has been objectively verified, there's no debate here.
Did he run on a left-leaning campaign? Absolutely. Should you trust nazis that sound nice? This might surprise you, but they often lie to gain power.