Is your advocacy to vote in order to cancel out mindless voters? Or does the heuristic promote voting to cancel out the mindless in general?

I ask because I don't think you can generally distinguish between voting idiots and non-voting idiots in a secret ballot system.

Imagine a less publicized election with low turnout. If the pro biotechnology group votes more rigorously, they might actually have more mindlessly pro-science voters because a large number of anti-science voters stayed home.

If the heuristic dictates voting against idiots in general, then it falls to the aforementioned "reversed stupidity is not intelligence". If the heuristic dictates voting against voting idiots, then you need to have good assumptions about which idiots vote and which idiots stay home. And that's virtually unattainable knowledge.