Last night's Arizona GOP debate averaged 4.7 million viewers and 1.4 adults 25-54. The 4.7 million trails CNN's Nevada GOP debate (5.5 million), Florida (5.4 million) and South Carolina (5.0) million. The most-watched debate of the season was ABC's Iowa debate in December that averaged 7.6 million. A Florida debate on NBC in January averaged 7.1 million. The most-watched debate on cable was Fox News' Iowa debate in December with 6.7 million.
note: an earlier version of the paragraph above incorrectly listed Fox News Channel's Iowa Debate in December w/6.3 million viewers instead of 6.7 million.
With the debate, CNN of course led primetime over the other debate-less cable news networks.