What exactly a caucus is and how it works. Martha we have reporters who are fanned across the caucus sites to make him a peter doocy is with the Biden Campaign, as he has been throughout the process so far. Jacqui heinrich is covering senator Bernie Sanders. Alecia cuneo is massachusetts senator Elizabeth Warren and mike tobins with Pete Buttigiegs team this evening. Bret plus we have analysis and voter survey results from brit hume and Shannon Bream. Lets begin with shannon, who has the early indication, the early indicators from the fox news motor analysis survey results on the key issues on their minds as they had to caucus, good evening, shannon. Good evening, guys. Bret and martha, this is our first look at our fox news motor analysis survey. Weve been talking with nearly 3,000 likely Iowa Democratic caucus goers. Heres what we are learning what some of the scenes in this race. First up, one of the biggest debates within the Democratic Party involves those who want a candidate who