1. Keep happy. (Of course you have reason to be) DO NOT let a liberal ruin your Thanksgiving -- they can ruin their own if they feel the need, but don't let 'em drag you down. Remember you can always agree to disagree and then go talk to someone more agreeable.
2. Speak to first principles and use basic logic, not the partisan talking points of the day. More than likely, your lib counterpart is working from the DNC script which of course means the MSM. If you find yourself discussing the Saudi Royal family you have already lost. If that subject comes up, just look at your counterpart a little askew, like they honestly know jack squat about the Saudi royal family, c'mon! Make them respond to the logical conclusions of obvious points you both agree on. If they haven't heard it on TV it'll probably throw 'em for a loop.
3. If you are trying to keep the peace, the passive-aggressive approach is almost ideal. Play rope-a-dope, let 'em go nutzo with more wild conspiracy arguments, while you crack another beer and have a chuckle. Remember, they lost, they have the burden of proof, and you've got a fresh beer. That's win-win-win. And hey it worked for Dubya, it'll work for you too!
You know bringing this to FreeRepublic is great. I hear the experiences of many like me, and some sage and sometimes funny advice. Thank you FREEPERS!