The issue: The biggest clash of Thursday's debate came over their differing approaches to providing health care to the more than 50 million Americans without health insurance.

Clinton's claim: Hillary Rodham Clinton repeated her claim that Barack Obama's plan falls short of universal health care --something she supports -- because it would not cover all Americans. She said, "You chose to put forth a health care plan that will leave out at least 15 million people."

Obama's claim: Obama said, "The notion that I am leaving 15 million people out somehow implies that we are different in our goals of providing coverage to all Americans, and that is simply not true." He added, "We think that there's going to be a different way of getting there."

The facts: The health care plans put forth by both candidates are similar, but Clinton's plan includes a mandate for individuals to get insurance, while Obama's plan mandates only that children have it. Obama has shown reluctance to force people to buy health insurance. Experts consulted by estimate that 15 million to 26 million would not opt for insurance under Obama's plan. COX NEWS SERVICE