If this can whip up a big enough controversy, it may be enough to call for a re-vote.
If they suspect that enough people have been doing this...
When stories about the general elections and the Scottish referendum being tampered with got exposed on the Internet they got no media attention whatsoever and most people said "It's just a conspiracy theory".
no one brings a ****ing pen to vote, stop
and use pen/sharpie ALWAYS.