thats true, they can however convince others to vote properly.
I dont think they even tried doing that.
this is like punishing the whole class for something a few did. The next time the few decide to pull something off, the rest of the class is going to try really hard to stop them.
If someone is determined to vote a certain way how can anyone change their mind? The job of our representatives is to vote according to what they see as being in the best interest of their constituents. You can't force someones vote.