true measure of who is ahead in the democrats' race for president. iowa voters begin caucuses february 3rd. three weeks later, south carolina will hold its primary. it will be the first in the south and today several candidates, you can see on the right, are at the same event in the capital city of columbia, south carolina. senator amy klobuchar expected to take the stage at this presidential criminal justice forum. a live picture there from columbia. candidates introducing plans to reform the system all day long and a bit of controversy, i should mention, involving the schedule and senator kamala harris. harris initially pulled out of the forum at a historically black college after only a limited number were allowed to attend and given an award why in same event. nbc news reporter joins us from outside that forum. curious about one thing. senator harris is now, has now