President Obama still holds a small lead over Mitt Romney, and it's thanks entirely to his popularity with women and minorities, according to a new Quinnipiac poll. The poll has Obama ahead 49% to 45% overall, but his support among women is especially strong at 56% to 38%, and his support among blacks is nearly unanimous at 94% to 2%. Men and whites, by contrast, back Romney 52% to 42% and 53% to 42%, respectively.