Was that before or after the 47% gaffe? I forget. That 47% remark was used by the MSM to great effect and I remember that as somewhat pivotal. The MSM does the same thing to Trump regularly although Trump seems to be providing them less ammo these days which is good.
I looked and I found: http://www.motherjones.com/politics/2012/09/secret-video-romney-private-fundraiser
The 47-percent gaffe was in mid-September, but Romney recovered especially after the first debate where he did very well.