Ford's union locals are the furthest in the voting process. The total vote at this point is more than 63 percent in favor of ratification.
But at one plant, Ford's big Kentucky Truck plant, more than 57 percent of the production workers who voted, voted not to ratify.
And a slim majority of production workers at Ford's Louisville Assembly plant also voted not to ratify.
One analyst notes that fewer than half of the production workers at the truck plant cast ballots, which could have slanted the results.
GM's Flint Assembly plant workers also voted not to ratify. But there aren't enough overall plant results from GM or Stellantis to see if there's a trend.
