In fact, the President's voting constituency is behind him.
The "70%" statistic is only in those polls that first fraudulently "educate" that embryonic stem cells are the "best hope" according to the "experts."
More information:
http://www.eppc.org/programs/bioethics/publications/programID.35,pubID.2665/pub_detail.asp
http://article.nationalreview.com/?q=YjliM2MwZTU1MzI5NTc2ZWFhNTE1NmMwNzNhZDA3MGM=
"The elected official's job is NOT to simply ape the will of the majority of his constituents nor vote his own will. His job is to do what is legally permitted and best for the societal unit over which he governs. Protecting innocent life is a high calling and moral obligation for any legitimate government."
Indeed.
It's too bad that FR attracts not just conservatives, who should be hailing this veto today for a number of reasons, but also libertarians, who are not only ticked off at this veto, but whose main objectives are to have government legalize drugs and prostitution.