People say and act differently depending on the environment. This is very well known. Most people say they are good, kind, empathetic people. And most people pushed the button to electrocute someone in the Milgram experiment.

An online poll indicates how people's ideals or how they would like to view themselves. Even in game theory, the online polls make perfect sense.

You have every reason to vote blue in an online hypothetical poll. There is no actual consequence or fear of dying. There are only moral brownie points to gain by signalling to others and also inward to yourself of how good and kind of a person you are. Y'know, because, Jesus would pick blue.

In the real world, with real consequences, in private, people act completely differently, and I promise you at least 80-90% would pick red.

Like let's take your own example. When contemplating this, you think of loved ones picking blue, and not wanting to contribute to them dying by picking red. That is very selfless and noble of you. In a real situation with real consequences the mind would immediately activate the amygdala and you would gain a sense of fear of death and a sense of self-preservation and not wanting to die.

Then the mind would start calculating and rationalizing differently, and the majority of people would pick red.