Why? because of the people executed while he was governor? Do you feel the same way about the very liberal governor before him?

According to this yearly summary of Texas executions and this list of Ann Richards' and George W. Bush's terms (and eliding the very slight overlap between calendar year and term), Richards allowed the execution of an average of 12 people per year (which is still way too high), while Bush allowed the execution of an average of almost 26 people per year. (BTW, what's the deal with Bush's 1996's three executions?) Also, Richards administration presided over an average of almost eight removals from death row, while Bush's presided over an average of almost four.

Still, you're right that Richards' administration presided over a dramatic increase in executions, but Bush's rise was ever greater. The four previous administrations had averages of executions and removals in these numbers: 0/1 0.25/12 5/6 4/6 -- The second and fourth ones are actually the same (Republican) governor.