Both parties subvert the constitution. They agree that the constitution only gets in the way of their great plans (of course, that's what it is there for). The only arguments between the two parties are on which parts of the constitution need to be destroyed. The see-saw battle between the parties results in our freedoms being lost and government power increasing, first being attacked from the one side, then the other. Neither party repeals the damage done by the other. The result is a ratcheting effect, where the gains by each are locked in. The progress is always in the same direction - towards tyranny and away from liberty and government restraint.
Voters are presented with an untenable choice - to choose between false alternatives. Will you vote for loss of your economic freedom and your property rights this time, or will you vote for loss of privacy and loss of restraint on government's use of physical violence?
The press keeps blinders on themselves and their audience. The opponents attack each other with glee, the press works to raise the contest to a fever pitch. Everyone has a jolly old time, being free of anyone spoiling all the fun by pointing out the obvious:
The overriding issue isn't which rights you should lose today, it's freedom vs slavery.
Both parties are poisonous to freedom and contemptuous of the constitution.
I choose not to choose between a socialist who leans towards fascism and a fascist who leans towards socialism.