CONCORD, N.H. (AP) — Presidential contender Hillary Rodham Clinton’s campaign chief on Friday had a simple message for rival Barack Obama’s camp: Stop running a misleading television ad.

Clinton campaign manager Patti Solis Doyle sent the letter to her counterpart, David Plouffe, and told him the ad contains incorrect information about Obama’s health care plan. The ad claims Obama’s plan would provide insurance for everyone, but critics say the Illinois Democrat’s plan would leave 15 million people without insurance.

“On an issue of this magnitude, Americans are looking for more than a nice ad or a good speech. It’s not enough for Senator Obama to say he covers everyone, especially when that is inaccurate,” Solis Doyle wrote. “Until the time comes when Senator Obama has a plan that will cover everyone, you should stop running this false advertisement. The American people deserve an honest debate about health care.”

Obama’s ad has been running for weeks in Iowa, where polls show a tight contest between Clinton, Obama and John Edwards. The ad went on the air in New Hampshire this week. The Obama campaign said it had no plans to take down the ad.

“The Clinton campaign didn’t say a word when this ad was released a month ago, and the only thing that’s changed since then is the poll numbers,” Obama spokesman Bill Burton said in a statement.