THE HILL — Workers at a Staten Island, N.Y., Amazon facility will begin voting in person Friday on whether they want to unionize.

At the same time, a thousand miles south, workers at the e-commerce giant’s Bessemer, Ala., warehouse are in the final stretch of a mail-in vote that will be counted Monday.

The two elections are labor’s best chance to get a foothold at Amazon, yet and a bellwether for the future of organizing at the nation’s second-largest private employer.