Moderators...please delete my post/ latest response. Evidently my copy paste function had another link attached. This one I posted is totally off topic.
If they wanted to do something to knock off Trump, they should run Rubio on the ticket with Hillary. Then they can call themselves the moderate party. By doing this, they get to label Bernie to the left of Hillary and Rubio’s liberal views play to that.
Plus Hillary gets to say that Rubio is the first Latino to run for higher office and it also gives Castro a couple of election cycles to get prepped for the job.