Remember, when Ralph Nader did this, we got George W. Bush. Trump would be worse.
You worries are unfounded. Nader didn't run as a democrat. Sanders will eventually run out of steam. When he does that will change the numbers the media is polling right now. The vast majority of Sanders supporters will fall in line with Clinton and the "neck and neck" race the media is railing about NOW will go back to a huuuge Hillary advantage. The reason it "appears" grim for the abrasive Mrs Clinton at the moment is that the GOP side is settled and the dem side is split. The media fails to observe the obvious as it "looks" like Hillary is losing to The Donald and it gets the incredibly stupid American voters all in a tizzy and the media can sell more ad space telling this stupid lie. When it is just Clinton vs Trump we will have an accurate situation to poll the public on. Bernie won't be the dem choice even long before the convention. He won't even come close to getting the delegates to steal the nomination or force a contested or brokered convention. He is just dragging this out to get his stupid pie in the sky message in front of the media.
Or he's playing the ticket to be the nominee if Hillary is indicted. I say it's a good bet by Sanders.
I can see how you and others would believe that Sanders is hoping Clinton gets charged with a crime between now and November. I would hope that the FBI isn't playing such a cynical role. If they are then they are doing a huge disservice to American politics. If Hillary has broken a/some laws that would disqualify her as a candidate for president then they should have fast tracked her to an orange jump suit. If Obama has had a part in dragging heels of the FBI investigation then he should be charged and convicted of obstruction of justice as well.
Sure, that will happen, with a justice department run by Obama with one of his minions in charge.
All the FBI can do is investigate and "recommend" charges be brought. Again, it's DumBama's justice department, so they have the choice of charging Hillary or not.
If they decide to bring charges, she would still be qualified to run for President, but it's unlikely she would. If they decide not to charge her, then it would make the entire Democrat party look corrupt. Top FBI officials would resign. Right-wing media outlets would have a picnic with such an outcome. Hillary's name would be mud to most Americans.
I don't believe Sander's is evil enough to "hope" Hillary is indicted or recommend to be indicted. But it's a good move on his part to stay in the race in the event. Now if that would happen, and the Democrats decide to throw Biden or Warren in for the nomination, you will see such outrage by the Sander's supporters that it would guarantee a President Trump.