Sen. Hillary Clinton at 16 percent leads Democrats presidential nominees . Sen. Clinton Obama second at 24 percent , John Edwards at 24 percent . Former Sen. John Edwards of North Carolina was favored by 16 percent of the 458 registered voters who described themselves as Democrats or as independents who lean Democratic . Clinton only has a 3-point lead over Obama among college graduates .
Sen. Hillary Clinton at 16 percent leads Democrats presidential nominees . Sen. Clinton Obama second at 24 percent , John Edwards at 24 percent . Clinton only has a 3-point lead over Obama among college graduates .