Peoria, Ill., as seen from across the Illinois River. Jeff Haynes/Reuters /Landov hide caption

itoggle caption Jeff Haynes/Reuters /Landov

Republican presidential candidate Newt Gingrich speaks to the media at the Union League Club following an earlier meeting with Donald Trump at Trump Tower on Dec. 5 in New York City. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images