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i'm wolf blitzer. you're in "the situation room." we begin with a stunning turnd around in south carolina where mitt romney has nearly downed his support in the past month to take a solid lead. in our latest cnn orc poll, 37% of likely voters are now backing romney in south carolina. santorum and gingrich are battling for second and 18% respectly. but santorum is soaring. while gingrich has dropped 25 points. paul has jumped up to 12%. perry has slipped to only 5% in south carolina. jon huntsman stands at 1%. with a look at what's behind romney's south carolina surge, let's go to j...

A headlock is not illegal for the police to use. a chokehold would be go after the carotid arteries here and squeeze and if you do it right within 16 seconds you will choke somebody out and they will be unconscious. if you go for the trachea or windpipe, you can literally kill somebody, that's illegal by every police department standards. it may sound technical, but it really isn't in this case, is it? >> no, it is very technical in how it's applied. and it's usually -- you have to use both your arms to tie it up to actually apply it. and what looks like when there's the grappling on the groun...