With older poll workers sidelined, young Americans step up

The air was freezing, the sun had yet to rise, and Leo Kamin had just arrived at the church for his 6 a.m. shift – which meant he only had 15 hours to go.

Out came the tents and tables, mercifully arranged around heating lamps in the gusty parking lot. Inside, he and a team of poll workers puzzled together dividers, printers, tables, tablets, computers, and their all-
important voting machines.

All that was left was the voters. And at Mr. Kamin’s polling station in Denver on March...