This [3] is interesting...
New Iowa Poll: Romney Up, Richardson In [4] - A new Iowa poll from Selzer & Co. in today's Des Moines Register shows interesting developments for both parties. On the Republican side, the poll has Mitt Romney surging ahead of the rest of the field, though it's worth noting...[Real Clear Politics [5]]
The poll has Romney up in Iowa w/30%, and McCain and Rudy at 18% and 17%. Don't know much about the sample and the record of the polling company, but you would have to say this shows some real momentum.