Joe Biden says he ‘screwed up’ in debate as he fights to save candidacy Financial TimesBiden tries but fails to turn back rising tide threatening to swamp his reelection bid CNNBiden Tries to Prove He Is Still Democrats’ Best Bet The Wall Street JournalBiden responds to criticism over his debate performance: ‘I screwed up’ Fox NewsBiden heads into a make-or-break stretch for his imperiled presidential campaign The Associated Press