Obviously revolutions are a great way to change your form of government when you don't like what you have. i know that I myself have taken advantage a few times.

Anyway, what I want to know is this:

Is it possible to have a revolution to overthrow the current leader, but to keep the same form of government?

For instance, if my king is a bit rubbish, as most of them seem to be, can I fix a revolution to simply replace that king with a new one? I remember that this could be done on the first Medieval TW, and was often quite handy then, as it no doubt would be on Empire, especially when playing as Spain....