Whatever way you look at it, Nationalist Socialism is winning. The former grand head of the KKK, a rampant nationalist socialist, has endorsed and recently thanked Trump for everything he has done for white supremacists.
That's the right wing. What about the left wing? Well, you have people like Sanders, Clinton, etc who believe in nationalist socialism.
You are conflating two completely different political ideologies...
Nationalist Socialism (aka
Nazism), is
Fascism and far-right-wing political ideology... "Usually characterized as a form of fascism that incorporates scientific racism and antisemitism"... it is not socialist in the slightest (I know, names are confusing, usually on purpose)
Democratic Socialism (like Sanders), is a mid-left-wing ideology... "Democratic socialism is a political ideology that advocates political democracy alongside social ownership of the means of production, often with an emphasis on democratic management of enterprises within a socialist economic system"
Clinton is neither of these, Clinton is an Oligarch ("Moderate" ideology)... she definitely does not believe in any form of socialism
Please do not confuse Fascism with Socialism... these are diametrically opposed ideas... Fascism is equivalent to a king owning everything and ruling by decree (North Korea), whereas Socialism is essentially democracy with social/public ownership of production/infrastructure