Isn't his 'law' being challenged? A wee bit early to say what the judicial branch will do to the voter ID law. Liberals have a history of busing in bodies to vote in their close elections.
All I can say is Perry promoted and passed the law.
Also I must note that nobody has been more acutely aware of legal challenges than Rick Perry and Greg Abbott.
They are suing the EPA at this moment
The US Supreme Court has already ruled on the constitutionality of Voter ID ~ see: http://www.nytimes.com/2008/04/29/washington/28cnd-scotus.html