Fourth Republican Undercard Debate: 7 Moments That Mattered

— -- A reshaped lower tier took the stage in the fourth GOP “undercard” presidential debate in Milwaukee tonight, with New Jersey Gov. Chris Christie and former Arkansas Gov. Mike Huckabee joining former Sen. Rick Santorum and Gov. Bobby Jindal on the stage. The debate, hosted by Fox Business and the Wall Street Journal, focused on economic policy -- from taxes to entitlement reform. Jindal wasn’t afraid to take the gloves off, but Christie aimed to focus on the conversation on Hillary Clinton. South Carolina Sen. Lindsey Graham and former New York Gov. George Pataki, who had been included in previous undercard debates, couldn’t reach 1 percent in the four most recent national polls to earn a spot on the stage. Here’s a look at seven moments that mattered: