The threat to Hilary will come from her left. Sanders/Warren/O’Malley or some doofus of that ilk will get the democrat nomination.
Hillary will make a deal...she will offer Sanders the VP slot as long as she promises to put some of his nutcase proposal on her platform...
Problem solved...
She just sewed up the entire left wing base and a lot of independents...
Sanders is the left wing Donald Trump except his followers actually think he is not a nutcase...