I think the market will have a minor "taper tantrum" but I don't know if that will be the needle or not. As the housing market of 2001-2008 showed, this can go on for a lot longer than people expect. People were sounding the alarm in 2005, but it didn't take full fruition until late 2007.
IMO, the bubble will pop in the private market before we even see it pop in the public markets.
Like forest fires, recessions are natural to capitalistic market and any attempt to prevent it only adds kindling.
There's this sort of instinctual dry-up, right before the eight-year mark on an incumbent president, sort of like geese flying south for the winter. No one says anything to one another, but the angle of the sun changes, the summer weather is gone, and all the birds hit the road at the same time.
Regardless of the parties and there representation in whichever offices, and under whatever titles, everyone knows that different people will be sitting in different chairs when the dust settles, for some, there will be a new-car smell, and for others there will be painful hours stepping through a debugger, converting data from one format to another. Either you'll be comfortable while the bugs shake out, or you'll be in for a cold winter in a drafty house, but since the immediate future is up in the air, everyone stocks up for a harsh winter.
However, leadership (in a company, in a country, whatever) will set the priorities and tone of any group under them. Even if that leadership is in some ways going against the current of the bureaucracy, it's certainly possible for a dynamic leader (or group of leaders) to change the direction of an organization. And if there's one thing most people in politics must be exceptionally good at, it's getting people to agree that their plan or policies is the best plan or policies.
There's also a lot of power in being able to say "These are the criteria upon which all of you will be evaluated for raises and promotions", too. I'd expect the US bureaucracy is a little more ossified than most large corporations, but not so much so that appointing leadership doesn't change the direction of the bureaucracy.
Heh heh....seeing wall st and the corporate media sweat is gonna make 2016 the best election ever....
FWIW, I wouldn't put a lot of money on Sanders either, not because I think he'd be a bad choice (IMO he is the only rational choice of the credible and currently announced candidates) but just because he's not particularly charismatic (which matters, unfortunately), he's pretty old and he's easy to label a socialist, which is still sadly about the worst thing you can be labeled as (short of being an "ISIS terrorist") in the minds of a lot of the demographics in America that actually show up to vote.
But the ETF liquidity is real, right? Is a crisis ever going to get so deep that there won't be people willing to buy the ETF at 20.5, sell the physical at 19.5, and take a free profit?
What's the threat model here? A run of redemptions on BlackRock?