Saying it doesn't make it true - show some facts supporting your position. I don't think you have any. "Feelings" about things are how liberals deal with the world - it's not how conservatives deal with it.
I am not grokking this. O'Reilly has admitted it openly on many occasions. He cannot .... ever .... bring himself to vote for a Republican. For him, the lesser of two evils in any election will be the Democrat. And that, my friends, included Bill Clinton, Kerry, and BHO, Jr.
During his years at a Catholic college, O'Reilly was assigned (I am sure) to read Rerum Novarum and other works concerning Christian Social Justice. Historically, these writings led eventually to the Europe-wide Christian Socialist Movement which sought to combine socialism, and even communism, with Christian principles. O'Reilly is also personally very familiar and influenced by the old Catholic Workers Party, championed by Dorothy Day and others.
Chrissie Matthews has spoken on this, and so did the late Tim Russert. Because of these convictions, many Catholic college grads (and intellectuals ... there is a difference) came to identify with the Democrat Party. Ironically, The Democrat Party never identified with them.
But these fellows admit often that they ALWAYS vote Democrat. Call O'Reilly and ask him. You'll get a most amusingly hedged, parsed, and indirect answer. Bottom Line: Democrat.
Independent? Sure. Independent Democrat.