Protesters chant and hold a copy of the Declaration of Independence and the Constitution in front of Supreme Court in Washington as the court concluded three days of hearing arguments on the constitutionality of President Barack Obama's health care overhaul. Carolyn Kaster/AP hide caption
Supporters of the health care law have recently embraced the term "Obamacare," a word they once recoiled from. Charles Dharapak/AP hide caption
Foster Friess introduces Rick Santorum at the 2012 CPAC Conference in Washington, D.C., on Feb. 10 wearing a sweater vest embroidered with the candidate's name. Ron Sachs/CNP DPA/Landov hide caption
Supporters listen to Republican presidential candidate Rick Santorum at The Ravine in Bellevue, Wis., on March 24. Some voters in the state are complaining about a barrage of negative ads in advance of Tuesday's primary. Darren Hauck/Reuters /Landov hide caption