Obama's white support cut in half in a week in South Carolina

I was reading a Yahoo article about Obama talking about Hillary's Iraq vote and I was surprised to read this:

-snip-

A poll released Thursday evening showed Obama still leading Clinton 38 percent to 30 percent, but his support among men had dropped by half in just a week. Obama is supported by 10 percent of likely male voters now, and the rest of his male support shifted to John Edwards, according to the McClatchy-MSNBC poll.

http://news.yahoo.com/s/ap/20080125/ap_on_el_pr/obama

That made no sense. Obama collapsing among males? At 10% among males? I looked at the numbers and it turns out the write mistook whites for males.

Last week among whites: Hillary 39, Edwards 28, Obama 20
This week among whites: Edwards 40, Hillary 36, Obama 10

Fortunately for Obama his black support remained solid. He gained 3 points, Hillary stayed the same, and Edwards gained only 2 points to move up to 4%. The story out of this is what caused such a big drop in such a short time? Will it continue? More importantly, will it hold nationally or is it limited to South Carolina? If Obama gets 10% of the white vote nationally on Super Tuesday, where most states will not have a large black population which is giving him at least 34 points over Hillary and 55 over Edwards, he is done.

http://msnbcmedia.msn.com/i/msnbc/sections/news/080117_Dem_Primary_Poll_1-08_Mason-Dixon.pdf
http://www.mcclatchydc.com/static/pdf/poll/012408scdem.pdf

what disgraceful characters...