Republican Donald Trump would pull the plug on "Obamacare," promising to start over. Democrat Hillary Clinton has a list of ideas for making insurance more affordable and covering more people, but as president she'd need willing Republican partners in Congress and the states.



The new survey offers a hint that the nation's historic coverage expansion may have actually gone into reverse during part of this year. An earlier CDC report covering just the first three months of this year found that the number of uninsured had been even lower, an estimated 27.3 million people — or a million fewer than the six-month figure in the latest report.



Witters said that means it's likely that the period from April through June saw an increase in the number of people without health insurance. "It's edged up," he said. "These trends always ebb and flow."



The CDC's Emily Zammitti, lead author of the report, said the study was more of a snapshot than a trend line of progress on the uninsured. "Whether it's plateauing or not ... we can't determine that," she said.



The uninsured rate is 8.9 percent in the latest CDC report, a few notches higher than 8.6 percent in the earlier study.



