In the vast and fractured democracy of Brazil, a nation long divided between competing visions of its future, the presidential runoff has arrived at a moment of genuine equipoise. The latest Quaest polling places President Lula and Flavio Bolsonaro in a statistical tie, a finding that transforms what once seemed a settled contest into an open question. History will be written in the final weeks of campaigning, in the turnout of ordinary citizens, and in the quiet decisions of those who have not yet made up their minds.