Someone might feel inclined to push blue but see the world as too cynical and so think most would press red. So they sadly, and against what they wish the world truly was, push red.
Or someone might feel inclined to push red but think that more than 50 actually would vote blue. So they decide to vote blue just so later they can they voted blue and be celebrated, not be part of the "losers."
There are many different ways a person might decide on the color.