Fox News killed it in the ratings when it came to President Trump announcing his Supreme Court nomination. 

FNC more than adoubled CNN and MSNBC's rating combined according to Nielsen.

Here is the breakdown: 

9-9:15PM/ET (Supreme Court Justice Announcement)
FNC delivered 6,644,000 P2+ and 1,345,000 A25-54
MSNBC delivered 2,053,000 P2+ and 370,000 A25-54
CNN delivered 1,587,000 P2+ and 486,000 A25-54