Imagine you're in prison. The warden decides to give all the inmates a vote on whether pudding or brownies will be the dessert at lunch.
This vote gives the illusion of choice. Regardless of the outcome, you are still locked in a caged, controlled by your masters.
That, in a nutshell, is the current US Political system. There is NO good political party with the interests of the people at heart. They are merely the guards for the system that continues to enslave you.