City Councilor Annissa Essaibi-George has thrown her hat in the ring to succeed Marty Walsh as mayor. (Herald video by Meghan Ottolini)
More info on Annissa Essaibi-George launches run for mayor of Boston
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Sports betting launches in Mass. at MGM Springfield, Encore Boston Harbor
Sports betting officially launched Tuesday morning with fanfare at two of the state's casinos — Encore Boston Harbor and MGM Springfield.