Bad idea.  The same argument could have been made during the Civil Rights movement.

There are fundamental individual rights in our constitution - and a recognition that majority rule can deny those rights to groups the majority don't like.  This is the well named "tyranny of the majority."  The system of checks and balances - three branches of government - is foundational to a functioning democracy.  The courts have a duty to check excesses of the other branches.

We must protect the rights of minorities even if all three branches are primarily in the hands of those with one set of political beliefs.  

What you propose is not democracy, but mob rule.  Or, perhaps it is democracy but not constitutional democracy.  If there is nothing that binds us as a nation, then perhaps it would be better to break into federations of those with similar beliefs.  Break apart the U.S. because there is nothing really binding us except, maybe, fear of Russia, China, terrorists?