and in that part of the iowa polling, donald trump is doing really great right now. in the new poll out today, likely republican caucus goers in iowa were asked if they could support a particular candidate or never support a particular candidate. the candidate who most republicans would never support is donald trump, the 58% of iowa republican likely caucus goers saying they could never support donald trump. new jersey governor chris christie does well on that metric. 45% who say they're going to go to caucuses say they could never ever support him but on this one donald trump wins. on the other side of the ledger the candidate iowa republican voters most like as their number one choice for president right now is wisconsin governor scott walker. he comes in at 17% in this poll that's out today. tied for second at 10%, ben carson and rand paul.