WASHINGTON (AP) — A surge of eleventh-hour enrollments has improved the outlook for President Barack Obama's health care law, with more people signing up overall and a much-needed spark of interest among young adults. According to the nonpartisan Kaiser Family Foundation, young adults 18-34 represent about 40 percent of the people eligible to buy coverage in the health care law's new insurance markets. Following the disastrous rollout of the insurance exchanges in October, when HealthCare.gov was virtually unusable, Democrats have been hoping that higher-than-expected results could help their candidates reclaim the political high ground ahead of the midterm elections. Seven months out from Election Day, they're seeking to turn the page on the law's flawed debut — a strategy underscored last week when Obama announced that Health and Human Services Secretary Kathleen Sebelius, who became the face of the rollout failure, was stepping down. With the insurance markets looking increasingly viable, Obama and Democrats were hoping to move the political debate away from repeal and toward efforts to fix lingering issues.