What happens to supporters of Massachusetts Sen. Elizabeth Warren if she doesn’t run for president in 2016? Do they join up with Vermont Independent Sen. Bernie Sanders, or former Maryland Gov. Martin O’Malley, both of whom are considering bids as liberal insurgents? Unfortunately for progressives spoiling for a fight against all-but-declared frontrunner Hillary Clinton, most Warren supporters seem to be ready to support Clinton, at least at the moment. That’s one takeaway from the new NBC News/Marist poll, which removed Warren from its survey of the three early presidential states, citing the senator’s frequent insistence that she’s not running for...