Middlesex District Attorney Martha Coakley yesterday advanced in her bid to replace Thomas F. Reilly as the state's attorney general. She ran unopposed in the Democratic primary, and will now face Republican Lawrence Frisoli, a Cambridge lawyer and one-term city councilor.
Coakley's office has recently handled a string of high-profile prosecutions, including the case against British national Neil Entwistle for allegedly murdering his wife and nine-month-old daughter.
If she wins in November, Coakley would inherit the ongoing criminal probe of the Big Dig in the wake of Milena Del Valle's death in the Interstate 90 connector tunnel in July.
Coakley cast her vote at Brooks Elementary School in Medford, then spent yesterday afternoon campaigning in her old stomping grounds of Dorchester.