Romney: ‘Onto New Hampshire, We Have Some Work Ahead’ 

Gingrich: Great Debate Remains to be Had Within GOP

Shields and Brooks’ top picks for Iowa Caucuses

While political analyst David Brooks says Mitt Romney is the likely winner (even though Rick Santorum is resonating among Iowa voters on social and economic issues), the “sleeper story” is how Ron Paul is resonating among independent voters, says NewsHour regular Mark Shields.