The research team said the difference in outcome could not simply be explained by bad health habits which could affect the birthweight.

BBC: Small babies spell danger for mother

Particularly, new ads coming from the left - groups like MoveOn.org - going after Democrats who seem to be, in their view, wavering - Democrats like Mary Landrieu of Louisiana, Ben Nelson of Nebraska - without understanding, seemingly, that these Democrats could be in very bad shape in their states and Republicans could get elected if they get too far out there on issues like health care and energy.

NPR: Overhauling Health Care Takes More Than Money