With most politicians, it’s easy. First reference: You write their first and last name. Second reference: last name, plus title if you’re feeling formal. With the former senator and secretary of state, however, it’s trickier. Calling her “Clinton” poses an obvious problem, especially if—like me—you’re simultaneously writing about the other Clinton who served as president. “Former Secretary of State Clinton” is cumbersome. So I did what many journalists do: I went with “Hillary.”