Lincoln entered 1860 as the least credentialed of the four rivals

Goodwin establishes just how improbable Lincoln's 1860 nomination was by detailing the far more impressive resumes of his three main rivals: William Seward, the sophisticated former governor and sitting senator from New York widely considered the frontrunner; Salmon Chase, the accomplished governor and senator from Ohio known for his early and passionate anti-slavery record; and Edward Bates, a respected elder statesman from Missouri. Lincoln, by comparison, had served only one unremarkable term in Congress and had recently lost a high-profile Senate race to Stephen Douglas.

Goodwin uses these contrasts to frame the central puzzle her book sets out to answer: how did the candidate with the thinnest political résumé of the four leading contenders end up winning the nomination and then the presidency, while the other three ended up serving under him.

Her answer, developed across the book, centers not on luck but on qualities of temperament — patience, self-awareness, strategic restraint — that didn't show up on paper but mattered enormously once the four men's paths converged.

Takeaway: the most qualified résumé in the room doesn't always predict who ends up leading it.