While the Left agonizes over its relationship to the Democrats, the extreme right has few qualms about throwing elbows within the GOP. Socialists should follow their lead and accept doing battle within the Democratic Party as the only viable political option.
You get how voting works, right?
People who support candidate A are going to vote for A because they’re not joining your boycott. Assuming everyone else, or even a large chunk of people who support candidate B join you and refuse to participate? How do you think that fares for B?
You end up with A elected in a landslide, and policy veers even farther from representing B.
Then one side needs to do better and represent the working class, not their donors. But since thats not gonna happen they need to die off as a party so an actual party that represents the public can emerge.