This is quite a complex question in the sense that it reminds me of questions like WHAT IS GOVERNMENT? or WHAT IS ECONOMICS? in WAEC. This kind of question is not what u just delve into without caution as u may fail woefully if care is not taken. Having said that, considering the fact that av not been to many states of the country, I would give my response via views by proxy as such, the best Governor would be Shekarau of Kano state cos when I visited the state, I was wowed by wat I saw and of course, the worst governor would be my own governor, Olagunsoye Oyinlola. I just wonder what the man does with money allocated to the state for 8 years of his reign