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?