Supporters of the health care law have recently embraced the term "Obamacare," a word they once recoiled from. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

In this 2005 photo, then-Massachusetts Gov. Mitt Romney presents Afghan President Hamid Karzai with a memento at Boston's Logan Airport. Karzai was preparing to speak at Boston University's commencement. Dina Rudick /AP hide caption

itoggle caption Dina Rudick /AP

A screen shot of President Obama from the trailer for his campaign movie, The Road We've Traveled. hide caption

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A homemade bumper sticker on the back of a car during a Tea Party rally in Concord, N.H., Romney appeared on Sept. 4. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images