President Joe Biden faced challenges regarding his age and fitness for office, defending his candidacy during a rally in Detroit where he vowed to win and emphasized his accomplishments, despite calls from some Democrats to step aside. Biden is navigating internal party concerns and criticisms, including from high-profile figures like former Howard Government Minister Peter McGauran. Despite facing pressure and skepticism within his own party, Biden remains determined to continue his campaign and has emphasized his resolve to confront both Democratic doubts and challenges posed by Republican opponent Donald Trump. Biden's recent press conference, marked by difficulties and gaffes, underscored the ongoing struggles he faces in maintaining his candidacy amidst growing uncertainties.