I would assume that is its purpose, yes. And yes, fake/typo votes are probably why there's a catch-all at the end before the Prelims really start. Even if it's not fake votes, missed votes would also create the need for such a safety catch net. Coordination isn't as hard as one might think - you just look at the previous votes and vote accordingly - whether you want to reinforce votes just to be sure or to reach out for that girl everyone else didn't have space for.
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