Dartmouth students took their civic responsibility seriously on primary day, turning out in large numbers to cast ballots, hold signs, or just talk over their final decisions with friends, and even the candidates themselves. Voting at the Hanover High School polls went smoothly, with town officials helping more than 1,000 people, most of them students, through same-day registration, prompting one legal observer to call it “the most efficient registration of new voters, new registrants, I’ve ever seen.”