Atlantic City's first casino, Resorts International, opened on May 26, 1978. The second referendum was approved by a slim margin, with approximately 1.5 million voters in favor of it and 1.14 million opposed. This initial referendum was defeated in 19 of New Jersey's 21 counties, with about 60% of votes cast against it.Ī revised referendum, limiting gambling exclusively to the city limits of Atlantic City, was placed on the ballot November 2, 1976. The issue of casino gambling first appeared on a ballot for New Jersey voters on November 5, 1974.