used to be sort of a front tier of five, biden ahead of the rest of that pack, now it's really a top tier of three with biden and in the second group, warren and sanders. you now have kamala harris despite a strong performance in the first debate and pete buttigieg who had a period of time when he was getting a lot of attention, they're back down in single digits now. you have to say there's a top three, yes and then a next two. the top three have separated themselves from the field. doesn't mean that can't change next week or going on through the fall. but the field is beginning to sort itself out. >> shepard: looking forward to this weekend. is will talk with the secretary state mike pompeo, also a republican who says he's considering running against president trump, the former south carolina governor and congressman, mark sanford. he said he would decide by labor day but delayed the announcement