Independent
~A person who votes for candidates, measures, etc., in accordance with his or her own judgment and without regard to the endorsement of, or the positions taken by, any party.

I was no party man myself, and the first wish of my heart was, if parties did exist, to reconcile them.
George Washington

There is nothing which I dread so much as a division of the republic into two great parties, each arranged under its leader, and concerting measures in opposition to each other. This, in my humble apprehension, it to be dreaded as the greatest political evil under our Constitution.
John Adams

Here in America we are descended in blood and in spirit from revolutionists and rebels - men and women who dare to dissent from accepted doctrine. As their heirs, may we never confuse honest dissent with disloyal subversion.
Dwight D. Eisenhower

To lodge all power in one party and keep it there is to insure bad government and the sure and gradual deterioration of the public morals.
Mark Twain

The most practical kind of politics is the politics of decency.
Teddy Roosevelt