Here's my rundown.
I don't hate Clinton (or her husband). I don't hate any politician, there are, in the end, just people. Granted, they are all strange, but oh well.
It all boils down to what you think about human nature and what's right and wrong and what should be law.
Do like big governemt or do you like small government?
Do you think all life is sacred? If not, what kind of life isn't? How should we treat the Earth's enovironments? Its creatures? Its humans?
Do you think laws should tell people what the can do or what they can't do?
What do you think of money? Is it just an object? Is it a tool? Is it a virtue or a vice?
There are TONS of other questions I could ask, and anwsering them tells you what kind of person you are.
And that also explains where partianship occurs. This are funadmental differences -- this is human nature.
I will always see humans as inheriantly good, and superior to animals. I am simply not going to see eye-to-eye with someone that thinks humans are assholes and we all need to live like the humble beaver (or dolphin, or wombat, or pigeon...). Now, you can almost reach an agreement when you have something like a Constitution that loosely outlines what's right and what can be made into a law. An environmentalist could argue sparrows have rights in the Consitution -- likewise, I can argue an unborn child has those rights.
The important thing is that we each respect everyone else. And in the respect, polititicans on both sides sometimes fail us. And sometimes, in the strangest moments, they don't.