Senate Debate 7 p.m. WGBH (Channel 2) The final debate between Senator Scott Brown and Elizabeth Warren.
Frontline “Big Sky, Big Money” 9 p.m. WGBH (Channel 2) How the Supreme Court’s decision in the Citizens United case is affecting the senatorial race in Montana.
Boston Public Radio noon WGBH-FM (89.7) “30 Issues in 30 Days” election series: How has stimulus money benefited the state?
Radio Boston 3 p.m. WBUR-FM (90.9)
Senate Debate 7 p.m. WGBH-FM (89.7) Brown-Warren debate with analysis.
Boston Public Radio 8 p.m. WGBH-FM (89.7) Post-debate special with Emily Rooney, Peter Blute, and Shannon O’Brien.
Nightside With Dan Rea
8 p.m. WBZ-AM (1030) Dennis Lehane on his new book, “Live By Night.”