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The biggest impediment to stopping Trump may be John Kasich

With John Kasich in the race, it's possible that Trump could sweep the Super Tuesday states a week from now.

Republican presidential candidate John Kasich speaks outside Mutt's BBQ in Mauldin, S.C., on Feb. 13, 2016. (Photo by Jim Watson/AFP/Getty)
Republican presidential candidate John Kasich speaks outside Mutt's BBQ in Mauldin, S.C., on Feb. 13, 2016.AFP – Getty Images

Chuck Todd

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

Carrie Dann

Mark Murray