the past three days i've talked to iowans what's important to them and if it's important candidates get specific when it comes to substance? elizabeth warren has been doing it from the beginning, bringing out policies on a weekly basis. the way she decided to stand out. is it the way voters want to hear from candidates? the answer seems like yes based on conversations i've had like this one we had on saturday. listen. >> is there any candidate in the field that stands out at nailing it on policy. >> oh, i like elizabeth warren. i just loved what i heard with kirsten gillibrand. i love cory booker. so many good ones. >> they got have specifics. >> oh, yeah. oh, yeah. >> reporter: here's the thing on policy, craig. there are so many ways to stand out in this field, and each candidate has to figure the best way for them to do that especially as voters make a decision and when they have so many options. elizabeth warren clearly leaning in hard to this policy laying,