Keith, according to the Sec of State's web page, absentees received by Nov. 7 can still be counted, and as of election night there were still 50K that had not been returned. It would be statistically unlikely for them give Kerry enough votes (if they ALL came in -- which they wouldn't -- they would need to break about 63-37 in Kerry's favor).
Iowa still wouldn't do it for Kerry. The only way he could win is if he gets Ohio from Bush. Bush already has NV which put him over the 270 mark. Kerry can't even tie it anymore. He would have to take away a state already called for Bush.