GOP Presidential Hopefuls Scout S.C., Prep N.H. for...

Aired: 1/6/2012 | 0:03:29 | Clip
On the campaign trail Friday, GOP contender Mitt Romney used his decisive lead in the polls to go after President Obama, while Romney's allies put rival Rick Santorum on the defensive for using earmarks. Judy Woodruff reports on the candidates' campaign strategies as they converge on New Hampshire before Tuesday's primary.