where america wins. on to new hampshire! >> senator john mccain's expected to endorse romney in new hampshire today. >> thank you so much, iowa. >> reporter: it's a big win, too, for rick santorum. he got 25% after polling in single digits just a few weeks ago. >> we will be in new hampshire. we'll leave tomorrow. we'll spend our time there. and with your help and god's grace, we'll have another fun night a week from now. >> reporter: ron paul came in third and thanked an enthusiastic crowd of supporters. >> we will go on. we will raise the money. >> reporter: but romney's biggest challenge may come from newt gingrich who vowed to fight neg-ads by attacking romney's record. >> the truth seems negative. that may be more a comment on his record than it is on politics. >> reporter: coming in next to last, rick perry announce the his suspending his campaign. >> with the voters decision tonight in iowa, i've decided to return to texas, assess the