Joe Biden Becomes First Incumbent President To Lose a Primary in 44 Years Joe Biden Becomes First Incumbent President To Lose a Primary in 44 Years Continue ReadingPrevious: Joe Biden Becomes First Incumbent President To Lose a Primary in 44 YearsLeave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment.