That's very odd, the story on their web page is broken. I re-searched from their page and it wasn't moved.
Anyway, I've been reading up on the touch screen machines. After heavy use, their calibration gets off. So while you may push the button for democrat, it registers republican underneath. Those one quarter of american who are retards (Southpark 2006) will automatically assume that this means they are trying to be cheated. However, had they pushed the Republican button, it would have registered Libertarian (just taking the wild guess that it reads off demo-repub-libert-green-indep).
The problem can be solved by recalibrating the touch screen.
or going office space on all of the new machines and using the old ones which are perfectly fine and have worked for a long time.