Americans are worried over what the health care overhaul planned by President Obama and congressional Democrats may bring, with 62 percent saying it likely will raise costs in the long run, 65 percent believing the health care system will become more complicated and 56 percent concerned it will limit choice of doctors and hospitals, according to a Time Magazine poll conducted July 27-28.

But showing the split-personality of the public when it comes to what reform will mean for the country and what it will mean to them personally, 63 percent support providing coverage for all Americans as Obama has outlined, 56 percent backed a public option to compete with private insurers, and 57 percent supported raising taxes on those making over $280,000-a-year to pay for the plan. Forty-six percent called it "very important" that legislation to change the system be passed in the next few months.

Americans split at 46 percent each over whether they approved Obama's handling of the issue, but they trust Obama over congressional Republicans on health care by 47 percent to 32 percent.

Barack Obama is leading John McCain 46 percent to 41 percent in a Time Magazine poll conducted July 31-Aug. 4. The margin of error is 3 percent. That's the same size lead Obama held in this poll in June.

Time says that the survey indicates some trouble signs for Obama. He does well on "atmospherics" such as being seen as more likeable (besting McCain 65 percent to 20 percent), on which candidate would really bring change (Obama leads 61 percent to 17 percent) and on who understands voters' concerns the best, (Obama leads 48 percent to 35 percent). But on specific issues, Obama only leads McCain 43 percent to 39 percent on the economy, down a point from June, and McCain is seen as the candidate better equipped to manage the Iraq war by 51 percent to 36 percent. McCain also leads when it comes to voter confidence in who could better handle the war on terror, by 56 percent to 29 percent.

Obama also enjoys an "enthusiasm" advantage, as other polls have shown. Forty-nine percent of his supporters describe themselves as enthusiastic compared to 21 percent of McCain supporters. Twenty-seven percent of Republicans say they are "not very" or "not at all" enthusiastic about McCain while only 10 percent of Democrats say that of Obama.