Healthcare.gov opened for browsing over the weekend, a week before people can begin to buy or renew plans for 2015. The fact that the government is previewing the site is a good sign. A working site on Nov. 15 is a chance for the Obama administration—and a new team leading the healthcare.gov effort—to restore some of the credibility that last year's flop damaged. The nation is split on the health-care law, with overall opinion tilting negative. Opposition may be so entrenched that there's little Obama can do to narrow that gap, but another faulty website launch would surely widen it.