JEFF GREENFIELD ANCHORS. This week, Need to Know's Mona Iskander travels to Virginia, a critical swing state in the 2012 election, to examine how the state's Republican-controlled general assembly's efforts to curb abortion could affect the presidential contest. Anchor Jeff Greenfield interviews Elaine Kamarck of the Harvard Kennedy School of Government. Greenfield also offers an historical essay about how the abortion debate has affected past presidential elections.