As the midterm elections draw closer, Dameon Stackhouse is eager to cast a ballot, but he can’t under New Jersey law because he remains on parole after more than a decade behind bars for second-degree robbery.

“We have no say,” said Mr. Stackhouse, a 41-year-old construction worker and student at Rutgers University-New Brunswick. “This is one of the worst things you can do to a citizen.”

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