Impeachment TV ratings: Between about 10 am and roughly 4 PM, an average of 13.1M viewers were watching, on average, across NBC, CBS, ABC, Fox News, CNN, and MSNBC.
Fox News was the most-watched channel for impeachment coverage, it appears, averaging 2.9M, to MSNBC's 2.7M, ABC and CBS' 2M, CNN's 1.85M, and NBC's 1.7M.