Corporations over people...
Capitalism emphasis is on self interested consumption, and not on citizens exercising mutual interests. Voters become enamored of politicians that appeal to their own self-interest, and not those who struggle to present the interests of the whole. The major party's choice of candidates is based on wealth and not ability, we don't like either candidate but we have little choice or say in who runs [I'm an independent in Florida I can't even vote in a primary]. Ultimately it is the capital in capitalism which exsanguinates democracy.
@Fanburger Prior to the Constitution, a document that lays down governmental structure, political processes, and limitations on the use of power there were just new world colonies belonging to the UK, after the Constitution was ratified a new nation was formed, the United States, became a nation comprised of states. The Constitution structures the role of all the parts.