Biden has largely led in the polls since entering the Democratic primary. Yet his front-runner status is complex: a cornerstone of his primary support is the black community — a recent poll from YouGov and The Economist showed Biden with as much as 65 percent of black support — even as his decades-long record on racial issues has transmuted into something deeply troubling to some Democratic voters. Though Sen. Elizabeth Warren has nipped at his heels in recent polls, Biden remains a peculiar front-runner — numerically indisputable yet, perhaps, fatally flawed. CONT.
Clare Malone, FiveThirtyEight