>> has this latest release her emails thrown hillary off message? we have been covering on this show how this controversy hadn't been weighing on her in the polls. >> reporter: they don't think so within her campaign. you have seen the polls showing she has a commanding lead for the democratic primary. bernie sanders has been gaining steam on her. that's worrying them a little bit. in our poll and others when you put her head-to-head with hypothetical republican matchups with jeb bush, marco rubio and donald trump and others, she has a harder time. they think they are in a commanding position. this email issue and others might be problems for her in the days ahead. i heard you saying referencing whether or not this is having an