Meh. You're talking about the original Antifa which was only in existence for about 2 years. They have technically been defunct since 1933. Modern day Antifa (as it pertains to the US) is not directly tied to any communist party, which have severely fallen out of favor starting in the mid 1940s. It's not directly tied to anything except the ideology of fighting fascism.

Not many people in the US or anywhere for that matter identify themselves as communists anymore, or socialists for that matter. The majority of voting Antifa members are obviously going to vote for Biden and not Howie Hawkins, who is the socialist / green party candidate for this year.

Don't understand what the point of trying to pigeonhole an amorphous movement with no real leadership was.