In his presser just now, Kucinich announces his reasons for switching to a Yes.

Paraphrasing:

/begin paraphrase
Health Care Reform has an urgent need. I've taken this fight further than anyone else and as far as I can. I take HCR personally. It's become clear that the vote on the final HCR Bill will be very close. I take this vote with the utmost seriousness. The bill will be a minimum recognition of the need for HCR in the context of a for-profit system. I have doubts about the bill, it is not the bill I wanted to support, even as I work to the last minute to modify the bill.

I have decided to count my vote in favor of passage.
/end paraphrase

Well said sir, and I thank you, not only for taking the fight as far as you have, but also for your support.