Today's newsletter is, once again, all about Donald Trump, because once again, Trump is saying/doing/tweeting things that draw our attention to him, and, once again, this is all playing out in a way that makes Hillary Clinton very happy. Before most of us woke up Friday (okay, waaaay before I woke up), Trump blasted three tweets that drove the news cycle for the rest of the day and reinforced questions about that all-important word in this presidential race: temperament; specifically how it applies to him. Here are the tweets: That's right. Exactly 40 days before the election, the Republican presidential nominee is tweeting about an alleged sex tape from a beauty queen in the '90s. How Trump treated former Miss Universe Alicia Machado has dominated headlines for a week, since Clinton brought it up in the debate Monday night. (Doesn't that feel sooooo long ago?) But lately it's Trump who's keeping this decades-old drama in the news, and he's doing it by launching more and more aggressive attacks against a woman who is decidedly not his opponent for the White House. As The Fix's Aaron Blake explains so well, Trump's accusations in those tweets don't really hold up. All they do is reinforce questions a recent New York Times/CBS poll shows nearly ⅔ of voters have about his temperament. Clinton probably couldn't have scripted this better herself. An investigation: Why Trump tweets late at night and early in the morning (Philip Bump / The Washington Post) There's another thing that confounds us about this episode: Why is Trump tweeting so dang early? The Fix's Philip Bump found that throughout the campaign, Trump tweets at almost all hours of the day, with only a break from 1 a.m. to 5 a.m. (One of those tweets, I found in an analysis last year, was to share an article about why successful people don't sleep much.) For the most part, Bump found that Trump's tweets are, as one might expect, heaviest just before and after major news events. Early on in his campaign, his feud with Macy's produced a series of early-morning tweets. Last fall, Trump was up late tweeting after his appearance on "Saturday Night Live." Trump is breaking endorsement records — and not in a good way A cool visualization you can click the graph to read more about. (Philip Bump / The Washington Post) Editorial record No. 1: In its 34 years, USA Today's editorial board has never weighed in on a presidential race. It didn't endorse anyone Friday, but it did offer a non-endorsement for Trump, who the board wrote is "unfit for the presidency." Friday's front page of USA Today | 