Which Election Convention's Opening Night had Bigger TV Ratings?

According to the Nielsen Corporation, 17 million people watched the first night of the 2020 Republican National Convention (RNC) on television. Nielsen data suggests 19.7 million watched the opening night of last week's Democratic National Convention (DNC) on television. C-SPAN's livestream of the RNC's first night was seen by roughly 440,000 people; roughly 76,000 saw the DNC's first night on C-SPAN's livestream. Both events saw roughly a 25% decline in total viewership from the first night of the 2016 conventions. Some reports in left-rated sources concentrated on the higher number of DNC viewers. Some coverage from center- and right-rated outlets focused specifically on the C-SPAN numbers, and on the fact that total viewership of the DNC's opening night was down from 2016. Reports on all sides, but especially from right-rated media, also focused on Fox News setting a record for the most-watched opening night coverage of a national party convention in cable news history.