Public support for the Affordable Care Act narrowly notched a new high in the latest ABC News/Washington Post poll, while criticism of Barack Obama's handling of the law's rollout – although still substantial -- has eased from its peak last fall.

Views hardly are enthusiastic: With the year's sign-up deadline upon us, Americans split on Obamacare, 49 percent in support, 48 percent opposed. But that compares with a 40-57 percent negative rating after the initial failure of the federal enrollment website last November.