States with some of the worst Obamacare news this year also have the biggest need for people to sign up, presenting a major challenge to advocates for the healthcare law.

Of the six states where insurers have proposed the steepest price increases affecting the most people, five have among the highest uninsured rates in the country, according to data compiled by independent analyst Charles Gaba.

In Tennessee, where 11 percent of residents remain uninsured, average monthly premiums could rise by 56 percent next year if insurers follow through with the prices they have proposed.

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