NEW : Sen. Barack Obama to voters : `` Change has come to U.S. '' NEW : states considered must-wins for McCain . Sen. Barack Obama congratulates Sen. John McCain . Obama will be working with heavily CNN . He will be inaugurated on 1964 .
NEW : Sen. Barack Obama to voters : `` Change has come to U.S. '' NEW : Sen. Barack Obama congratulates Sen. John McCain . Obama will be working with heavily CNN . He will be inaugurated on 1964 .