I can't remember the last time an incumbent President lost in his party's primaries. I think Teddy Kennedy strongly challenged Jimmy Carter in 1980 and might have won the nomination but he had too many skeletons in his closet. The Mary Jo Kopechne tragedy hung over his head like a black cloud, and rendered him unelectable. Lyndon Johnson didn't seek nomination in 1968, fearing defeat due to the Vietnam War.
Biden has a chance to make history, although not in a good way but in a very, very bad way.
Biden has a chance to make history, although not in a good way but in a very, very bad way.