In the latest clip, which is already being viewed on video-sharing site YouTube, Ms Couric asks: “When it comes to establishing your world view, I was curious, what newspapers and magazines did you regularly read before you were tapped for this to stay informed and to understand the world?”

Mrs Palin replies: “I’ve read most of them, again with a great appreciation for the press, for the media.”

Ms Couric: What, specifically?

Mrs Palin: “Um, all of them, any of them that have been in front of me all these years.”

Ms Couric: “Can you name a few?”

Mrs Palin: I have a vast variety of sources where we get our news, too. Alaska isn’t a foreign country, where it’s kind of suggested, ‘wow, how could you keep in touch with what the rest of Washington, D.C., may be thinking when you live up there in Alaska?’ Believe me, Alaska is like a microcosm of America.”

Her faltering performance came in the latest installment of her cringe worthy interview with CBS News presenter Katie Couric. Last week she was seen rambling in response to Ms Couric’s questions about the threat posed by Russia.

Presidential candidate John McCain has been forced to step in and defend Mrs Palin, insisting she is ready for the White House and claiming she is underestimated.

Many keep saying let Palin be Plain, but when she is asked fairly simple questions she screws them up horribly.  Just make her stop!  Everytime she opens her mouth she sticks a size (whatever it is) in it.  Please do not let her ad-lib.