He had 4 way bypass surgery on Sept 6, and will make an appearance with Kerry at a rally on Monday in Philly. Amazing.
...Kerry had once hoped for an intensive October schedule by Clinton, but the surprise quadruple-bypass surgery the former president underwent on Sept. 6 made that impossible. The procedure has left him fatigued, friends said, and until
this week it was unclear whether any appearances would be possible.
Clinton issued recent e-mail appeals to Democrats asking them to make contributions and "to look in the mirror and ask: 'What more can I do to help?' "