MSNBC’s primetime audience has dipped 53% since the week before the election, according to new Nielsen ratings data, a steep dropoff for the left-of-center network rivaled by a 47% drop by CNN—while Fox News has largely held onto its audience since President-elect Donald Trump’s victory.

As of Tuesday morning, Fox News commanded 62 percent of total day viewership in the month of November and 73 percent of viewership in the days following the November 5 election, N