http://www.laprogressive.com/2008/09/05/alaskans-speak-in-a-frightened-whisper-palin-is-%E2%80%9Cracist-sexist-vindictive-and-mean%E2%80%9D/

Apologies if this has been posted before.
Hmmm. Obviously this article is rather partisan, but I've seen the quote at various other places. Here's where it originally came from:
http://thepoliticalcurmudgeon.blogspot.com/2008/09/alaskans-speak-in-frightened-whisper.html

Also (and this is less surprising but has more substance):

http://www.huffingtonpost.com/2008/09/02/palins-church-may-have-sh_n_123205.html

Mental.