People who are politically engaged typically believe their actions will result in some sort of impact, and it is this belief that keeps them engaged. 

But how, exactly, are voters supposed to feel when a record-setting number of new Hawaii Democrats cast their ballots in our Presidential Preference Poll for Bernie Sanders (70%), resulting in....basically nothing, because the 7/9 Democratic Super Delegates had already pledged their votes to Clinton? 

Is there any more effective way to convince otherwise engaged voters that their actions are worthless?