gaffes and people said he s toast, particularly amongst african-americans, it didn t budge his support amongst african-americans in south carolina. and nothing seems to. reporter: no. that s really been true, ali. it s interesting, biden s support, i ve covered all of the major candidates in different forms or fashions in all of these different early states. joe biden and bernie sanders are both of the two candidates whose supporters are shopping the least. which means when i go to their events, i always ask people who is on your short list, who else are you looking at, and biden supporters and bernie supporters are the most likely to say this is my guy or my georgal. that s backed up by data from the recent pew poll. biden is thought to be a known commodity. he s got a vacation house here in south carolina. he has never been in the presidential race by the time they got to south carolina, he s never been in the top competitors among it. but he s a zone commodity here and well liked