Palpatine in '08

[Zenda]

Missouri election laws don't allow you to remove a name from the ballot that close to the election

If that law extends to obvious invalid candidates, it might require some adjustment, I'd say. Then again, it seems that some voters are quite content with it, since it gives them some extra 'opportunities'. And in using it, they help to keep the practice in existence. But my question was how common this is. Do most Americans perceive this as normal practice?