A Maryland suburb of the nation’s capital this week extended voting rights to 16-year-olds for local elections—expanding on a national push endorsed by Democrat politicians and donors such as billionaire George Soros. The Town Council of Cheverly—about 15 minutes outside Washington, D.C.—voted unanimously Thursday to amend the town charter to allow younger teens to participate in town elections. Cheverly, with a population of just over 6,100, joins the Maryland suburbs of Greenbelt, Hyattsville, Riverdale Park, and Takoma Park in allowing teens to vote at the same age they get their driver’s license. Another Maryland jurisdiction, Glenarden, lowered the voting age...