According to my understanding, progressive is well to the left of liberal, and pretty much amounts to commie, because, what are they progressing towards, you know? So, she's saying he's not a committed communist. Not like some.
I was just basing my opinion on what I’ve read about his health care plan in MA, which sounds a lot like obamacare with all the mandates, subsidies and regulations.
*He* may not be a “progressive” of the Saul Alinskey type, but he has progressive ideas.