DAYTON, OHIO ? Former President Clinton will campaign for Sen. John Kerry early next week in Philadelphia, a senior Democratic official who is familiar with the former president’s plans said Tuesday.

It was unclear whether Kerry would be there, too. But Clinton, who is recovering from heart surgery, has agreed to the appearance for his fellow Democrat, who is locked in a tight race against President Bush, the official said.

Kerry’s campaign also has outlined for Clinton other ways he can help rally voters and participate in the last two weeks of the presidential campaign, including visits to battleground states.

“There has been some discussion with the former president about things that will be great for him to do,” said Kerry adviser Mike McCurry. “We’re hoping that something will be able to come together.”

McCurry, who served as White House press secretary under Clinton, said the campaign hoped to hear back in time to plan events before Election Day, Nov. 2.

The proposal, subject to approval by Clinton and his doctors, includes a combination of solo events and joint appearances with Kerry, McCurry said.

Clinton, 58, underwent surgery quadruple bypass surgery Sept. 6 in New York City. He has spent the last six weeks recovering at home in Chappaqua, just north of New York City, and has recently been going on walks and chatting with other residents.

Even though he has not been traveling, Clinton regularly phones Kerry and his aides to offer advice. He also has agreed to tape a phone message that will be delivered to voters’ homes, and he may record radio advertisements.