So a standard normalization (divide by max value) wouldn't solve much but why I specifically mentioned a softmax is because you then rescale all voting preferences to have the same power. I don't think it is a good idea btw, other than the added complexity. But it does change the above example. The problem with the example was that the first voter gave no strong preferences and thus the second voter had more power. The solution is to rescale these, which is why I said that voters tend to do this automatically (give their preferred candidate on the ballot the stop score and rate all others in proportionate to them).