AKRON, Ohio - President Bush (news - web sites) and John Kerry (news - web sites) battled over the economy and jobs in a small corner of the campaign's most fiercely contested state Saturday as polls showed a post-convention surge for the Republican in the White House. Late Saturday, Teresa Heinz Kerry, the wife of the Democratic presidential candidate, was taken to a hospital in Mason City, Iowa, after complaining of an upset stomach, a spokeswoman said. She was taken to Mercy Medical Center-North Iowa by ambulance from the airport. "As a precaution, Mrs. Heinz Kerry had a series of...