The Obama campaign had been hoping that veterans and their families — especially among the post-Sept. 11 generation that served in Iraq and Afghanistan — would be part of their path to victory: They’re a high turn-out demographic and concentrated in battleground states, with nearly 1 million each in North Carolina, Ohio and Virginia, and 1.6 million in Florida. …

Obama’s campaign has been trying to improve on a historical Democratic disadvantage on national security and among veterans by touting the killing of Osama bin Laden, ending Iraq combat operations and winding down the war in Afghanistan. They’ve also been talking up the administration’s attention to veterans’ benefits and efforts spearheaded by first lady Michelle Obama, hoping to appeal not just to the troops but to the spouses and other military family members who have coped with long separations and multiple deployments. …

Instead, even as Obama has been gaining in the overall polls, several NBC/Wall Street Journal/Marist polls conducted from Sept. 9-11 had Romney well ahead of Obama among veterans in Florida, Ohio and Virginia. And in Colorado, a poll released Sept. 16 by SurveyUSA and the Denver Post found both veterans and military families supporting Romney over Obama 53 percent to 39 percent in a survey that included third-party candidates.