The midterm elections abruptly shifted the health care landscape across the country, strengthening the position of the Affordable Care Act while resulting in a divided Congress that could mean most changes unfold on the state level. Health care was the No. 1 issue among voters this election, according to an AP survey of about 90,000 people. The voting results suggested a rebuke to repeated Republican efforts to roll back the health law, and that many Americans care deeply about issues such as coverage for preexisting medical conditions. (Stephanie Armour, Wall Street Journal)