Biden has enormous polling lead in Democratic primary, despite challenge from RFK Jr.

President Joe Biden has a yawning early lead in FiveThirtyEight's new Democratic presidential primary polling average as he ramps up his reelection campaign.

As of Thursday, the new average shows Biden with 65.5% support nationally and controversial environmental advocate and attorney Robert F. Kennedy Jr. trailing at a distant 14.2%, despite extensive media attention and more than $6 million in donations so far.

Marianne Williamson, a bestselling author and speaker whose campaign is being run by a revolving door of strategists on a shoestring budget, according to financial filings, is...