The birth seasons of the Democrat and Republican presidential candidates may be one of the few details of the nominees that have escaped close scrutiny in the lead-up to November’s election. Such a neo-Hippocratic political analy-sis might also consider their general body types, genealogies, dispositions, and partners, according to the approach of a 1943 study, Lincoln-Douglas: The weather as destiny. Written by a Chicago physician and professor of pathology and bacteriology, William F. Petersen, the meteorological biography of Abraham Lincoln and his political opponent Stephen Douglas sought to make the case for the causal climatic forces on the political trajectories of its protagonists. Lincoln’s success was apparently thanks to his slender physique and ‘better equilibrium with the environment’.