Tonight at 7:00 p.m., Senate Minority Leader Bruce Tarr will be a guest on WGBH’s Greater Boston with host Emily Rooney. They will be discussing the progress of a habitual offender bill that is currently under consideration by a six member conference committee. Please tune in to Channel 2 at 7:00 p.m. tonight to watch the lively discussion, which will also be re-broadcast at midnight.