Massachusetts Beverage Business reports that a group representing the state's package stores is suing to block a proposed 2020 referendum that would let convenience-store chains, specifically Cumberland Farms, own as many liquor licenses as they want.

The plaintiffs, led by Sav-Mor Liquors Benjamin Weiner, said AG Maura Healey blew it by approving the measure, in part because it asks voters to do four separate things and the state constitution only allows ballot questions to ask voters to do just one thing at a time.