What to look for in fourth GOP debate

Republican presidential candidates former U.N. Ambassador Nikki Haley and Florida Gov. Ron DeSantis participate in a debate Sept. 27 in Simi Valley, California. (JUSTIN SULLIVAN/Getty Images/TNS)
Republican presidential candidates former U.N. Ambassador Nikki Haley and Florida Gov. Ron DeSantis participate in a debate Sept. 27 in Simi Valley, California. (JUSTIN SULLIVAN/Getty Images/TNS)

COLUMBIA, S.C. — The number of candidates on stage is shrinking, but the fundamentals of Wednesday’s Republican presidential debate may be familiar to anyone who has watched the previous three meeting…