The 4th Republican debate in Milwaukee (57 images)

Republican presidential hopefuls former Gov. Jeb Bush (R-FL) (L-R) Donald Trump, Ben Carson and Sen/ Ted Cruz (R-TX) talk after the fourth Republican debate at the Milwaukee Theater in Milwaukee, Wisconsin on November 10, 2015. Twelve candidates are debating each other in two difference segments. Photo by Brian Kersey/UPI

Republican presidential hopefuls Ohio Gov. John Kasich (L) and former Florida Gov. Jeb Bush participate in the fourth Republican debate at the Milwaukee Theater in Milwaukee, Wisconsin on November 10, 2015. Twelve candidates are debating each other in two difference segments. Photo by Brian Kersey/UPI

Republican presidential hopeful Donald Trump signs autographs after the fourth Republican debate at the Milwaukee Theater in Milwaukee, Wisconsin on November 10, 2015. Twelve candidates are debating each other in two difference segments. Photo by Brian Kersey/UPI

Republican presidential hopeful former HP CEO Carly Fiorina participates in the fourth Republican debate at the Milwaukee Theater in Milwaukee, Wisconsin on November 10, 2015. Twelve candidates are debating each other in two difference segments. Photo by Brian Kersey/UPI