New Ads Trade Shots on the Economy President Obama and several conservative groups are going head-to-head in a flurry of new attack ads, trading accusations over mishandled economic policies and inattention to the plight of struggling Americans. Over the next week and a half, viewers in 10 battleground states will be hit with $33 million in advertising, part of an aggressive effort by Mr. Obama, Mitt Romney and three conservative advocacy groups to define their opponent before undecided voters make up their minds. The Obama campaign released two television commercials on Wednesday that condemn Mitt Romney as a "corporate raider" who shipped jobs overseas, cut taxes for the wealthy and raised fees on the middle class. Both ads end with the campaign's latest attack slogan, an attempt to turn Mr. Romney's financial experience as a private equity executive into a liability: "Romney economics: it didn't work then, and it won't work now." The new advertising from Mr. Romney and the conservative groups - a $20 million offensive - takes aim at the president on two issues: his economic leadership and his health care overhaul plan, which the Supreme Court is set to rule on. One ad that is running in six states as part of a $5 million effort by the Concerned Women for America features a female doctor who worries that the new health care law will force her to stop seeing some of her patients. I've looked at this law. I know the consequences: delayed care and worse yet, denied care. No fewer than three new ads turn Mr. Obama's recent verbal misfire - "the private sector is doing fine" - back on him. There are minor variations in style, but the ads all contain the same message: the president is out of touch. All three also have the same title, "Doing Fine." The Romney campaign, which has committed $3.4 million to television advertising through early next week, started its version of "Doing Fine" last week, a twist on a 2008 commercial from the Obama campaign that mocked Senator John McCain for uttering the ill-timed phrase "the fundamentals of our economy are strong" as the stock market was plummeting and the economy was collapsing. Restore Our Future, the pro-Romney "super PAC," started running its version this week as part of a $7.2 million buy, as did Americans for Prosperity, the Koch brothers-affiliated group, with a $4.6 million buy. The 10 states included in the latest spate of advertising are Colorado, Florida, Iowa, Minnesota, Nevada, New Hampshire, North Carolina, Ohio, Pennsylvania and Virginia.