It looks like the Romney campaign can't just sit back just yet as his numbers actually got worse in a recent poll by Reuters perhaps as supporters of opposing candidates decide they would rather have a candidate other than their preferred one over Romney (not sure if that is what is actually happening, just taking a guess for a possibility).
http://www.reuters.com/article/2012/02/07/us-usa-campaign-poll-idUSTRE81514720120207
http://www.reuters.com/article/2012/02/07/us-usa-campaign-poll-idUSTRE81514720120207