The global fascist movement has had success hijacking the Republican party and some parts of the left (eg Gabbard). Largely the success on the right was greater because of affinity toward aggrievement in the electoral base that was more susceptible exploitation, but it also reflects the more mature financial channels (eg NRA).

But this is not a left/right political issue. That is incidental. The social exploit of this foreign operational is orthogonal to political ideology and both side stand to suffer substantially. Trump's lack of conservative ideology bona fides are well documented.