Each faces the pressure of creating a legacy before he becomes a lame duck. Which one do you think will have a better last term?
Just to clarify; Texas does not have gubernatorial term limits. Perry could run again in 2010 if he wanted to.
While Texas may not have a strict term limits policy like the one for the POTUS, it does have an "understood" limit of two terms per Governor. I think John Connelly was the lost Governor of Texas to serve more than two terms.
I don't know that there is such an understanding. Since the office became a 4-year term, most governors lost in their first re-election attempt. Bush was the first to be re-elected.