and welcome back. coming up to it, the final draw for the cnn democratic presidential debate, 16 of the 20 candidates know which night they'll be on the stage in detroit. now here on the lineups so far. on tuesday, july 30th, it is pete buttigieg, amy klobuchar, marianne wilson, john hickenlooper, tim ryan and steve bullock will go head to head in detroit. one night later wednesday, july 31st, julio castro, andrew yang, tulsi gabbard, michael bennet and bill de blasio will share the stage. david chalian joins us right now. what do you think the candidates would like to see happens next? >> the stakes are high in this moment. we already discussed debates do matter. we know that. but there are certain matchups here that the candidates are eager to have with one another more than others. for instance, joe biden, who does not want a repeat