Many unions are counting on the possibility that Bernie Sanders’s “Medicare for all” plan would get watered down so that it doesn’t eliminate private insurance, allowing them to keep the role of collectively bargaining for health benefits for members.

That’s not a likely scenario likely under the plan the top Democratic presidential contender is currently touting on the campaign trail, which would gut private insurance in favor of enrolling everyone in a government plan. But unions are banking that Sanders’s current plan won’t be the same as what would eventually emerge from Congress.