Tonight is the first of three scheduled debates between President Barack Obama and his Republican challenger, former Massachusetts Governor Mitt Romney.

Political scientists say that in the last half-century, political debates have rarely made an impact on election outcomes.  Because  candidates tend to be evenly matched in terms of capability, preparation, and political experience,  neither is likely to be able to dominate the other enough to sway undecided voters. Even if polls shift during a debate period, experts say, it can be hard to determine whether the debates were the cause.  Follow the National Urban League and supporters around the nation as we discuss tonight’s debate live, beginning at 8:30 p.m. Eastern Time. Use the hashtag #OccupyTheVote and visit www.occupythevote12.org

How will the debates affect your vote?