I recently watched videos of Bernie Sanders, who americans call left-wing, and maybe compared to other american politicians he is, but compared to russian opposition he is very like Boris Nemtsov and Alexey Navalny. First is literal founder of Union of Right Forces, second is considered to be center-right.
Others have already given adequate answers, but another angle from which to view the US is as the very core of the imperial core. You can’t maintain that level of global imperialism and a kayfabe democracy at the same time without massive amounts of propaganda and the suppression of any effective left-wing organizing. The most impressive part is that most USians don’t think they’re even being propagandized.
Thanks for reading material