tell me about iowa first. it's been 1 and 1a for a while with truck and carson. >> truck has been leading or close to the lead in iowa since the close of the summer. the big question is what is the ground game look like. what are these teams doing to turn in supporters saying they support the candidate to make them actual caucus-goers? it's a big lift in iowa. trump and carson have good ground games at this stage. reporter: let's go back to the debate stage now. bring back the picture. this is what viewers will see in a prime time debate. right there in the middle you have got donald trump. been carson and marco rubio. trump has been making a big