beat donald trump, chris. >> that will be a speech to watch and should be interesting. thank you for that breaking news. now, not at the meeting where ali is, front-runner joe biden who is increasingly the subject of questions about whether there is a gap between his poll numbers and enthusiasm for him as a candidate. joining me to talk about it democratic strategist jback wit me and the way the "new york times" put it is this. quote, the risks of a campaign argument that is heavily reliant on strong poll numbers, which can be fickle in a tumultuous election, were on vivid display throughout mr. biden's trip to iowa as voters repeatedly emphasized that their support for him was closely linked to what they perceived as his strength against mr. trump. if your supporters aren't enthusiastic, actually prefer another candidate, does that by its very nature mean the lead is precarious? >> seemingly, no. because his numbers have been