Last night's debate was the least watched so far

The broadcast set a record for CNBC, averaging 14.0 million total viewers and proving that the GOP debate is popular television. But the third debate between Republicans fell short of the markers set by the first two—Fox News averaged 24 million viewers in August, while CNN averaged 23 million in September.

CNBC’s previous viewership record of 3.9 million was set during the 2002 Winter Olympics, according to CNN. The debate was moderated by CNBC’s John Harwood, Becky Quick and Carl Quintanilla.