caucuses across iowa. caucuses will get under way, and then we ll start the process of tallying up and analyzing the choices, the selections of really what are the first voters to participate in the 16 presidential election process. it all starts in iowa, where at this hour the leading candidates are either speaking right now, or are about to speak. that s donald trump live on the right. a sanders event and rubio event on the left. some of them are en route to finishing their final rallies of the evening. the candidates at the top of the pack also have plans to join us this evening. we intend to talk to senator bernie sanders along the way, former secretary of state hillary clinton and donald trump. a busy night ahead. as for where the candidates stand in these final hours before the voting starts, the final poll from what s considered the paper of record in iowa, the des moines register, donald trump leading ted cruz by five points, 28-23. but remember, the margin of erro