In the last year of his life, Atwater publicly apologized for tactics like these. He told Tom Turnipseed, the object of his “jumper cables” attack, that he viewed the episode as “one of the low points” of his career. He apologized to Dukakis for the “naked cruelty” of the Willie Horton ad.

And in a private act of repentance that has remained private for nearly three decades, he told Raymond Strother that he was sorry for how he had torpedoed Gary Hart’s chances of becoming president.

Strother, 10 years older than Atwater, had been his Democratic competitor and counterpart, minus the gutter-fighting. During the early Reagan years, when Atwater worked in the White House, Strother joined the staff of the Democratic Party’s most promising and glamorous young figure, Senator Gary Hart of Colorado. Strother was Hart’s media consultant and frequent traveling companion during his run for the nomination in 1984, when he gave former Vice President Walter Mondale a scare. As the campaign for the 1988 nomination geared up, Strother planned to play a similar role.

In early 1987, the Hart campaign had an air of likelihood if not inevitability that is difficult to imagine in retrospect. After Mondale’s landslide defeat by Ronald Reagan in 1984, Hart had become the heir apparent and best hope to lead the party back to the White House. The presumed Republican nominee was Bush, Reagan’s vice president, who was seen at the time, like many vice presidents before him, as a lackluster understudy. Since the FDR–Truman era, no party had won three straight presidential elections, which the Republicans would obviously have to do if Bush were to succeed Reagan.

Gary Hart had a nationwide organization and had made himself a recognized expert on military and defense policy. I first met him in those days, and wrote about him in Atlantic articles that led to my 1981 book, National Defense. (I’ve stayed in touch with him since then and have respected his work and his views.) Early polls are notoriously unreliable, but after the 1986 midterms, and then–New York Governor Mario Cuomo’s announcement that he would not run, many national surveys showed Hart with a lead in the Democratic field and also over Bush. Hart’s principal vulnerability was the press’s suggestion that something about him was hidden, excessively private, or “unknowable.” Among other things, this was a way of alluding to suspicions of extramarital affairs—a theme in most accounts of that campaign, including Matt Bai’s 2014 All the Truth Is Out. Still, as Bai wrote in his book, “Everyone agreed: it was Hart’s race to lose.”

Strother and Atwater had the mutually respectful camaraderie of highly skilled rivals. “Lee and I were friends,” Strother told me when I spoke with him by phone recently. “We’d meet after campaigns and have coffee, talk about why I did what I did and why he did what he did.” One of the campaigns they met to discuss afterward was that 1988 presidential race, which Atwater (with Bush) had of course ended up winning, and from which Hart had dropped out. But later, during what Atwater realized would be the final weeks of his life, Atwater phoned Strother to discuss one more detail of that campaign.