Obama’s approval ratings on other front-burner issues, such as the economy and the federal budget deficit, have also slipped over the summer, as rising concern about spending and continuing worries about the economy combine to challenge his administration. Barely more than half approve of the way he is handling unemployment, which now tops 10 percent in 15 states and the District…

Since April, approval of Obama’s handling of health care has dropped from 57 percent to 49 percent, with disapproval rising from 29 percent to 44 percent. Obama still maintains a large advantage over congressional Republicans in terms of public trust on the issue, even as the GOP has closed the gap.

The erosion in Obama’s overall rating on health care is particularly notable among political independents: While positive in their assessments of his handling of health-care reform at the 100-day mark of his presidency (53 percent approved and 30 percent disapproved), independents now are divided at 44 percent positive and 49 percent negative.

At the same time, there is no slackening in public desire for Obama to keep pressing for action on the major issues of the economy, health care and the deficit. Majorities think he is either doing the right amount or should put greater emphasis on each of these issues.