Do they allow you to deviate?

Yes. There are moderates, and hardcore progressives. That's one of the many ways your cult characterization doesn't hold water.

I mean, they say "vote blue no matter who."

Yes, "they" being DNC clowns that want to stay in power so they can keep peddling influence. And people that consider themselves left-leaning or democrats are perfectly free to reject this silly argument and there will be no consequences. Again, not a cult.

So, if a Republican is better than a democrat you have to vote democrat? What nonsense is that?

Again, you're just wrong here. You're not being forced to vote for anybody. There are both Democrats and Republicans that will always vote for their own party's candidates, but that's not because they're being forced to; it's because they identify with one party over another.

This whole post is just a conservative rant about lefties poorly disguised as insight.