I have to assume they were done Oct 27 to 29th. Mason Dixon did polls last week. Why would MSNBC post polls from two weeks ago?
The Oct 15th to 18th must be a misprint.
I sure hope these are the most recent polls.
These are the most recent polls. For confirmation see:
http://www.msnbc.msn.com/id/6363705/
It's a brand new article from MSNBC talking about the new Mason-Dixon results including a 4 point FL lead for Bush and a 2 point OH lead.