SARAH PALIN ON SATURDAY NIGHT LIVE TINA FEY ON SARAH PALIN "CRAZY VOICE" DAVID LETTERMAN VIDEO

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Tina Fey has gotten laughs for her impersonations of Vice Presidential candidate Sarah Palin. The Alaskan governor is scheduled to make her big comedic debut on tonight's edition of Saturday Night Live. How does Tina Fey do her perfect Sarah Palin impersonation? Tina stopped by Letterman and explained the secret is in the "r's" with a bit of Fargo folksy talk thrown into the lingo mix.

She has a really crazy voice... Not since "Sling Blade" had there been a voice that anyone can do... [it's] a beautiful Alaskan windsong... It's a little bit "Fargo," a little bit Reese Witherspoon in "Election"... Seth Meyers puts a lot of Rs in, she really loves her Rs. source

Tina Fey told TV Guide she'll be "done" if John McCain and Sarah Palin win the election next month.

The "SNL" veteran who has come back to play the Republican Vice Presidential candidate (and whose own show, "30 Rock," is still nowhere to be seen), said, "We're gonna take it week by week. If she wins, I'm done. I can't do that for four years. And by 'I'm done,' I mean I'm leaving Earth." source

We're anxious see what the face off will be like when Tina Fey impersonates Sarah Palin in front of herself. Watch Tina Fey pardoy Sarah Palin's interview with Katie Couric.

Watch Tina Fey as Sarah Palin during VP  debates with Queen Latifah as Gwen Ifill.

Republican vice presidential candidate Sarah Palin arrived Saturday afternoon in New York to prepare for her appearance on NBC's 'Saturday Night Live."

She will head to NBC headquarters at Rockefeller Center for an afternoon of rehearsals before making her much-anticipated debut.

An aide to Palin said Saturday that "there are multiple scripts," but would not elaborate.

"Things are in the works," said Palin spokesperson Tracey Schmitt. "Stay tuned."

As of Friday evening, Palin had yet to see a script for the sketch show, according to another campaign adviser.

On Thursday, multiple sources told CNN that Palin planned to appear on the hit show.
It was not known whether Fey also will appear on Saturday night's program.

"Saturday Night Live" has featured three opening skits in which former cast member and Palin lookalike Tina Fey portrays the Alaska governor. source