My concern would not be with that mouthy a**hole, but with the reactions of others listening to her. I would not try to beat her, but would ask leading questions hoping to sink her or expose her.
An honest answer here... I have told friends and relatives who begin talking about politics that I learned during the 90s that democrats could not be trusted with power. I pointed out that without even hearing the evidence, that every democrat in the US Senate voiced their support for Clinton, telling me that not a single one was even willing to listen to an argument as to whether their guy had committed a felony.
I finish with, "I may not vote for someone who is a Republican, but I will never ever vote for a democrat again."
If they attack conservatives, I simply ignore it and repeat my argument.
You would be amazed at how this stops political whining by liberals, and even more surprised to see how many will actually agree with you.
Be sure and say "Grace" before dinner giving thanks for having a great man such as Dubya in the White House.
Tell her that anyone who is a democrat should be boiled in Republican vomit and buried with hanging chads stuffed in the cavity that once carried a heart.
If the lib presses the matter, let them know how cute we all think they are before they grow up.
It's a sign of egotism when people can't stop talking about their own preoccupations. Maybe we're all egoists at heart, and maybe (Hi, Randians!) we should be, but there are some times when people ought to keep that under wraps.
Looking for a gambit to turn the conversation away from politics? Children are usually a good bet. If you know who the kids are or what they're up to you can impress people with your knowledge. If you don't you can so confuse the names, ages, and interests, that it will take hours of concentrated effort to straighten things out again.
Also recipes. Complement someone on their cooking or start talking about a vague hint of ... something special ... that you just can't put your finger on ... Could it be tarragon? Soon everyone will be so busy trying to identify the secret herb or spice that politics will be long forgotten.
Also sports, or perhaps movies. If you can take all the hostility and anger in the room and direct it against Oliver Stone or Mel Gibson or some other film maker, or against Desperate Housewives or The Apprentice your work is done. But beware: everyone has to assume that the resulting anti-Stone or anti-Gibson rants are not about politics. Otherwise, you're back to square one.
I'm learning from Rush Limbaugh that if a liberal gets in your face, just laugh. Before the Presendial election, a friend told me she was voting for Kerry. I looked at her seriously when she said that and then burst out laughing. She asked why I was laughing so hard, and I said "If you don't know, you are just laughable". It did give her some pause to think.
Forget about the small talk. Hide your silverware, quick!
If that doesn't give her heartburn, nothing will.
Call Me!(Reasonable rates. Volume discounts)
ask her if she can count up to 35,000,000
Go to the FR search engine and put in -- THE REAL HILLARY CLINTON. It is 30 episodes I wrote. Print them and give them to the sick-o-fant.
put on your "W Still the President" t-shirt and send that Hillary buff into a sputtering frenzy.
Remember what Ann Coulter said? She states in her most recent book that conservatives must send liberals into a blind sputtering rage; and that, if this is not the outcome of any debate she gets in with a liberal, she looks back at that debate and wonders what she did wrong.
I would say very loud "How could you like someone who had a fling with Arafats wife".
If you like this person, avoid the topic. If not.....let 'er have it. Libs tend to wilt when faced with facts and direct questions.
How did this person get invited? Is it your mother's house and she's technically her guest? If so, then you have to respect your mother and not get into an argument. Just smile and change the subject and think of it as a good deed because you care about your mother and it's the season of good will. Besides, you can feel superior because you're above bringing these discussions to a family Christmas.