Rocking the vote

McCain voters might want to keep a low profile tonight at the Middle East Downstairs. The Cambridge venue will be Obama central when local hip-hop artists perform in support of their candidate at "Election Night: Barack the Vote." You can watch the election results and listen to music by Edo. G, Akrobatik, Indifferent Arts, DJ On & On, and Slaine, who made his acting debut last year as Bubba Rogowski in Ben Affleck's "Gone Baby Gone." 9 p.m. 18+. $15. The Middle East Downstairs, 480 Massachusetts Ave., Cambridge. 617-864-3278. www.mideastclub.com