Maryland Democratic candidates for comptroller pledged Tuesday night to undertake efforts to bring racial and social equity to Maryland’s tax system and state contracts, but they differed on recent legislative reforms of the office. Both Democratic contenders would make history if elected: Bowie Mayor Tim Adams would be the state’s first Black comptroller, and the first person with paraplegia to ever hold a statewide office in Maryland; Baltimore City Del. Brooke E. Lierman would be the state’s first woman comptroller.