If this board were mostly Republican, then most people would agree on almost every subject. But if anyone has been around FR in the past few days, they'd know that assumption simply isn't true. While many of us consider ourselves Republicans, many also vary wildly from various traditionally held Republican ideals and beliefs. And yes, some may be more liberal and more conservative. Since Republicanism has a conservative foundation, it's only natural that some would make the much-maligned connection between conservatism and being a Republican.
But, again, if everyone on this board believed the same things, what a boring place FR.com would be. And it certainly isn't boring, no matter how many people kick and scream their way out of here. For myself, I learn more when I read other freepers ideas, theories, etc- no matter which way they lean politically. And for those who seemingly want to label this site Republican, I highly encourage you to read more varied posts- because there are some brilliant thinkers on FR whose politically leanings are all over the map.