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A Republican Party on the brink of coming apart

Donald Trump's reluctance to repudiate the support of David Duke and the KKK has created a mess for the GOP.

Republican presidential candidate Donald Trump speaks at a rally at the Fort Worth Convention Center on Feb. 26, 2016 in Fort Worth, Texas. (Photo by Tom Pennington/Getty)
Republican presidential candidate Donald Trump speaks at a rally at the Fort Worth Convention Center on Feb. 26, 2016 in Fort Worth, Texas.Getty Images

Chuck Todd

Chuck Todd is NBC News' chief political analyst and the former moderator of "Meet The Press."

Carrie Dann

Mark Murray