I guess you base that surprising "half" on the transparent analogy with politics, and so you think real-world Democrats will press blue to assert their Democrattiness. This is probably true. However, since this is the internet, and being a Democrat is associated with being online and living in a city, there are probably more than 50% blue-pressers, as shown in the poll. Just like in the real world, you won't change that ratio whichever way you vote in the poll. If swaying opinion is within a voter's control, then your "choosing" is meaningful but the "half" becomes meaningless. If swaying opinion isn't within the voter's control, it's "choosing" that becomes meaningless, and the fate of the half is already sealed by cultural forces beyond our control.

I disagree that the hypothetical maps onto politics. Voting for democrats is mostly a vote for someone else (billionaires, etc.) to shoulder additional burdens to achieve some positive end. By contrast, this game involves serious risk to one's self and family. Lots of people would vote to raise corporate taxes to increase funding for schools in Baltimore. But those people aren't going to move their kids to Sandtown to help increase the property tax base.

I think if you played the game for real, blue would get maybe 5% of the vote, tops.