There’s a moral benefit to choosing blue if you think there’s a chance that the end result will be split 50-50 and you’ll be the deciding vote between a blue majority and a red majority.

I think it would be hard to prove you, individually, were the deciding vote to blue.

Everyone who voted blue in such a case could think they were the one vote. And they could be right.

There's an argument to be made that anyone choosing blue wants to die and you should respect their choice.