For the first time in its history, the Arizona Republic newspaper is supporting a Democrat for president, endorsing Hillary Clinton. In an editorial published Tuesday night, the board wrote that Clinton, not Donald Trump, understands the “challenges the United States faces domestically and internationally demand a steady hand, a cool head, and the ability to think carefully before acting.” Clinton not only has the “temperament and experience to be president,” but she knows how to “compromise and to lead with intelligence, decorum, and perspective.” For decades, Clinton has withstood “scrutiny so intense it would wither most politicians,” including some attacks that “strain credulity,” while Trump “hasn’t even let the American people scrutinize his tax returns, which could help the nation judge his claims of business acumen.” The board does believe Clinton has made some “serious missteps,” like the use of a private email server while secretary of state, but she “does not casually say things that embolden our adversaries and frighten our allies” and is the “superior choice” to Trump, who “responds to criticism with the petulance of verbal spit wads.”