these crowds, people who are all in. reporter: perhaps no one cares about crowd size more than the president of the united states himself. one thing we know, we get the biggest crowds by far. reporter: something that signaled something was going on with the gop field. we have these incredible crowds. something is happening that s amazing. reporter: especially in contrast with the presumed front-runner at the time. please clap. reporter: trump is not the first person to translate crowd size into something real. then candidate barack obama drew thousa thousands to then rival hillary clinton. reporter: drawing 27,000 to that same park in 2015 but lost the nomination. same question as elizabeth warren rallied her biggest event yet. does crowd size matter? even though biden is polling
higher than basically all other candidates right now, like warren have a lot more energy behind them. for years ago, bernie had bigger crowds and hillary still managed to win the primary, is that all that matters? i thiching it shows excitement. reporter: can they be misleading? mitt romney s crowd in february 2012 before clinching the nomination three months later and drawing tens of thousands by october. i m going to help the american people get good jobs and a bright future. reporter: this year, kamala harris launch attracted a big, diverse crowd but her polling has been up and down. sanders and warren s crowds have been dwarfing those meant to be, joe biden, who skew more intimate, which his campaign says is by design. i m trying to go around from town to town. reporter: while the democratic field is a packed one, not all candidates events are. what really matters is how people vote in the voting box, you know. sometimes they can show up at
simple. easy. awesome. welcome back, everyone. it is a dead heat in iowa according to the des moines register. within the poll s marnl of error, meaning elizabeth warren and biden are essentially tied
what it is left for congress to do is to exercise its authority sitting as a congress with all the power to inquire into impeachable offenses to demand this information and it will eventually get it if it persists in that nand. seems to be not only where democrats in congress were going today but senator toomey and romney, there may be increasingly bipartisan awareness that at long last this has gone too far without an adequate explanation of the facts. of course, the acting director of national intelligence will be on capitol hill this weekend to testify. we ll see if that sheds any light on all of this controversy. bob bauer, thank you very much. pleasure. thank you. thank you. a lot more to get to when we return. we ll go live to a pete buttigieg rally in iowa with a new interview as his poll numbers slip in that state and elizabeth warren s rise. we ve seen warren draw the biggest crowd for the democratic
rallies, sometimes they can t. reporter: with with votie in still months away, we re left to wonder, where do the candidates really stand and what does this b roll mean? ayman, that s the question i ve been thinking about all week since i was with elizabeth warren in new york monday night. really the thing i m looking at is there is a way to quantify this in our latest poll, nbc wall street journal poll. elizabeth warren has the edge over her opponents in terms of where the voters enthusiasm lies. it s easy when you re standing in a crowd. you and i both know this from being in the field, it s easy to feel something is happening. i find it more helpful and this is how we should look at it over the course of the next few months. what does the trend look like? elizabeth warren and bernie sanders have had bigger than usual crowds. that s the way i tend to look at polls. let s look at the trend, not just the one-off crowd size. what does all the b roll tell us?