It is something else. First, it is a sense of co-ownership, i.e. a feeling that this is in some sense my state, my political system. Second, it is a sense of fairness, a sense that even if an individual decision may be unjust, normally, and in the medium run at least, these institutions treat everyone fairly and intelligibly. Thirdly, it is a sense of protection by the institutions and protection against violence, fraud, hardship, and poverty.