President Barack Obama managed to gain a slight advantage in fundraising over Mitt Romney for the month of August, as 2012 campaign heads into its final stretch.

Obama raised more than $114 million in August, while Romney brought in just over $111 million, according to numbers released early Monday by the rival campaigns. It's the first time in four months the Democrats have outraised the Republicans. And it's a sharp increase for the president, who raised $75 million in July.

Despite Obama's advantage in August, it's the third straight month Romney has collected more than $100 million, and the figure represents his best one-month fundraising total. And Romney has socked away more money for the general election campaign.

The Republican hopeful showed signs of taking a new, more centrist tack toward health care and defense spending as he starts the next leg of his campaign with a Monday rally in Mansfield, Ohio, a pivotal region in a battleground state. Obama, who spent the weekend campaigning in Florida, is scheduled to be at the White House.

After weeks of pushing conservative GOP themes leading up to the party convention in Tampa, Fla., Romney's less partisan tone comes as the race shifts toward the Nov. 6 election, which is expected to be decided in fewer than 10 states where neither Romney nor Obama has a significant advantage.

Romney said in an interview that aired Sunday that he would keep in place elements of the federal health-care law signed by Obama in 2010. On NBC's "Meet the Press," Romney said: "I'm not getting rid of all of health care reform. Of course, there are a number of things that I like in health care reform that I'm going to put in place."

Campaign aides said Romney's endorsement of parts of Obama's Affordable Care Act was consistent with his previous position that those who haven't had a gap in coverage shouldn't be denied coverage.

The comments brought renewed attention to the similarities between the bill Obama signed and the one Romney championed when he was governor of Massachusetts.

Romney aides dismissed the idea that the candidate's comments about the defense cuts or health care were an effort to appear less partisan with the race for undecided voters now under way.

"Repealing Obamacare is a focus because it costs too much and the taxes and regulations are hurting small business. That's common sense," spokesman Kevin Madden said. "Affordability and portability of health care insurance aren't partisan issues."

Romney also faulted congressional Republicans for going along with the White House on a budget deal that has set up automatic spending cuts that include huge reductions in defense spending — a deal his running mate, Wisconsin Rep. Paul Ryan, helped steer.

Obama on Sunday focused Floridians' attention on the GOP ticket's stand on Medicare, an issue that's been more favorable to Democrats.

At a rally in Melbourne, Fla., Obama told about 3,000 voters that Romney wants insurers to profit at the expense of working Americans.

"No American should have to spend their golden years at the mercy of insurance companies," he said.

Romney and running mate Paul Ryan support allowing seniors in the future to choose between standard Medicare and a fixed payment to be used to buy private insurance.

After Ohio, Romney is heading to Nevada and Florida later this week. The Romney campaign is airing television advertisements for the first time in Wisconsin this week, hoping to force Obama to play defense in a state Democrats have carried in every election since 1988.

With an eye toward undecided voters dismayed by the lackluster economic recovery, Romney and Ryan faulted Obama for failing to provide the tax relief they say holds the key to the creation of millions of jobs. Romney has pledged to lower tax rates for by 20 percent for all Americans — including the wealthy.

Romney has said he'll pay for those cuts by eliminating loopholes and deductions for higher-income earners. But both Republicans were unyielding in saying that the specifics would come only after the election.

"Mitt Romney and I, based on our experience, think the best way to do this is to show the framework, show the outlines of these plans, and then to work with Congress to do this," Ryan said on ABC's "This Week."

Obama shot back hours later, saying the Republicans' proposals to cut taxes and cut the deficit don't make mathematical sense.

"They need to stay after school. They need to get some extra study hall in there. No recess for you," Obama said.

Early Monday, the Obama campaign released a new web video accusing Romney and Ryan of being evasive in their televised appearances Sunday as to which loopholes and deductions they might close. The pair "refused to name even one tax loophole or deduction" that Romney would close to pay for "his $5 trillion in new tax cuts favoring the wealthiest Americans" for fear of political repercussions, the campaign said.

Obama's campaign said more than 1.1 million people donated to his re-election effort in August, bringing its total number of donors to more than 3 million. The average donation was $58 and 98 percent of those who donated gave $250 or less.

"The key to fighting back against the special interests writing limitless checks to support Mitt Romney is growing our donor base, and we did that substantially in the month of August," said Jim Messina, Obama's campaign spokesman. Obama reversed a three-month trend at the time he needs it most, having spent heavily over the summer on advertising in an attempt to keep Romney at bay.

Romney's campaign did not release its total number of donors in August, but said about 94 percent of its donations came from people who gave $250 or less.

"Mitt Romney and Paul Ryan are offering bold solutions to our country's problems. That is why we are seeing such tremendous support from donors across the country," Romney's national finance chairman Spencer Zwick and Republican National Committee chairman Reince Priebus said in a joint statement.

Based on reporting by the Associated Press.

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