The NYTimes one has also been flagged now, and just about every comment in that thread has been downvoted heavily. My guess is it's a small group of users flagging everything about the election results.
Absurd. There is an identically titled article from election night 2016, for Trump. HN has consistently carried water for Trump by allowing a small number of HNers to flag Trump critical articles, for four years.
I won't deny that HN as a whole has a conservative tilt (edit: at least in who's willing to flag and downvote), but I've always found dang's rulings on stuff fair and reasonable. We'll probably get a thread at some point with a stickied reminder to chill out.
I seriously doubt HN has a "conservative tilt". People on this site generally try to call the good for the good and the bad for the bad, regardless of party.