Brown, Warren fire away over voting, work records Heritage issue argued again in combative second debate ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page MATT STONE/POOL With David Gregory of NBC News at moderator, Senator Scott Brown and Elizabeth Warren debated at UMass Lowell. matt stone/pool The hourlong debate, the second of four, skipped quickly from issue to issue. Above, Brown makes a point. christopher evans/pool At times, policy took a back seat to sniping over some political flash points. Above, Warren answered a question. jim davis/globe staff Both candidates were aggressive, while often complaining that they were being misrepresented by their opponent. jim davis/globe staff Audience members arrived at UMass Lowell’s Tsongas Center before the event. jim davis/globe staff Supporters for each candidate were outside. jim davis/globe staff Attendees of all ages were showing their colors.