reporter: mitt romney would obviously like to change the subject, he d like to move on and sell his pro-life conservative credentials to the people of south carolina which he obviously wants to win. he did talk a bit about his work at bain capital. he says every job lost is a tragedy, and no surprise he emphasized the positive. the audio is not great, but take a listen. the reality is in the private sector, that there are some businesses that are growing and thriving, and we were fortunate enough to be able to be part of that in a small way and there are some businesses that have to be cutback in order to survive and to try to make them stronger. sometimes you re successful with that and sometimes you re not. reporter: some conservatives have been critical of the line of attack from former speaker newt gingrich foray tacking romney on his work at bain capital. the speaker says he has very legitimate concerns about it. here is a sample of what he s saying on the issue today. you