Corporations are not citizens.<p>This means that <i>technically</i> they cannot cast a vote in an election. But it also means that in <i>practice</i> the power they can exert to effect certain political outcomes must be constrained (otherwise votes of citizens will become even more meaningless because of the asymmetry of capital concentration).<p>You say "although I doubt that the sky will fall; corporations already find ways to shovel about as much money as they might like at candidates". Surely they were not actually able to push unlimited amounts of money to influence political outcomes, otherwise there would have been no reason for the Supreme Court to make the change. Or no?