Democracies have emerged from scandal and abuses of power before, so it not actually insane to believe that it can happen again.
Believing that the outcome will be a perfect fairy-tale land of milk and honey, on the other hand, not so much. It's important to keep in mind that victory in this case probably looks a lot like better constitutional oversight of the FISA courts.
Insanity: doing the same thing over and over again and expecting different results.
Democracy is not about elections, it's about representing yourself.