President ial race. For democrats this is the first true test to see who can Gain Momentum in an effort to secure their partys nomination. On this super bowl sunday, we are seeing an allout blitz. Candidates are canvassing the hawkeye state, their last chance to speak to wouldbe caucusgoers after town halls, rallies, hand shaking, it all comes down to this. But which way is the make or break state leaning . If you listen to them, this race remains as close as ever. Pete seems a little too slick. Joe biden perhaps is aged. Im as undecided as other people are of their first choice. I dont understand why people can be undecided in this party. Theres no way to beat trump without capturing the middle ground. So the stage is set. The candidates are swarming, and in iowa, cnns own jeff zeleny who is live for us in des moines. Jeff, who stands to make the biggest impact potentially in these final hours before the caucuses begin . Reporter well, fredricka, the Closing Arguments have begun with