Elizabeth Warren is the only candidate making sustained gains in the Democratic presidential primary polls. But reports of Joe Biden’s demise are greatly exaggerated. Following her botched campaign rollout, which left her early polling in the single digits, Warren has rebounded to a statistical tie with Biden. Still, Biden hasn’t cratered. His RealClearPolitics average hasn’t once fallen below 25%, and only Warren has joined Biden in crossing the 30% threshold.

Instead its the slow collapse of Kamala Harris and former second tier candidates, as well as a gradual bleed from Bernie Sanders, whose polling has reflected his recent health woes bringing his age to the forefront of debate. The primary has devolved into a two-way split, with the frontrunners comprising the overwhelming majority of primary support, and Sanders trailing behind as the sole spoiler to keep up his polling in the low double digits.