No, that's not how it works. I will vote for Bush because he is still the best candidate who has a chance to win this year.
I realize that there are other offices and other elected officials and I will be working to send the most conservative congressmen and senators to DC that I can.
I will also be working for state and local conservatives and I will be working behind the scenes for a more conservative presidential candidate in '08.
There is a lot more to do than complain. You should get involved and work for change.
Maybe a little complaining (when the president behaves like an FDR hyper-clone) is actually in order.