Massachusetts Attorney General Martha Coakley debates her Republican opponent for governor, businessman Charlie Baker, tonight. WAMC will carry the debate from WGBH in Boston live at 7pm. Both candidates are looking for a political comeback: Baker lost to Governor Deval Patrick in 2010, and Coakley lost a special election for U.S. Senate to Scott Brown in her last statewide race. Ahead of tonight’s debate, Coakley spoke with WAMC’s Alan Chartock.