Campaign signs for U.S. Republican presidential candidate Newt Gingrich are displayed along 32nd Street in Paradise Valley

 
Campaign signs for U.S. Republican presidential candidate Newt Gingrich are displayed along 32nd Street in Paradise Valley
Campaign signs for U.S. Republican presidential candidate Newt Gingrich are displayed along 32nd Street in Paradise Valley, Arizona February 28, 2012. Arizona and Michigan registered Republicans will vote today during the presidential primary. REUTERS/Joshua Lott (UNITED STATES - Tags: POLITICS ELECTIONS)