could wind up netting just over 310,000 new votes. enough to beat nathan deal in 2010, enough to give barack obama wins in both 2008 and 2012. according to that math, georgia turns blue. after signing the civil rights act of 1964, lyndon b. johnson reportedly remarked the democrats had lost the south for a generation, and they did. but if democrats can register enough voters across the south, they might just win it back. coming up, i'll talk to someone who spent years organizing to increase african-american turnout. one of the only white members of congress who represents a majority african-american district. this year, once again, he's facing a primary challenge. stay with us.