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From rival to endorser: A look at the top insults traded by GOP candidates

Donald Trump equated Ben Carson's "pathological temper" to the illness of a child molester. Asked why he endorsed Trump, he said,"That was political stuff."

Sen. Marco Rubio holds a rally in Salem, Va., Feb. 28, 2016. (Photo by Mark Peterson/Redux for MSNBC)
Sen. Marco Rubio holds a rally in Salem, Va., Feb. 28, 2016.mark peterson/redux pictures 2016

Khorri Atkinson