In a pivotal moment Thursday night, Connecticut emerged from political obscurity to play a critical role in President Joe Biden’s future. As key figures in the Biden wing of the Democratic Party, Connecticut’s elder statesmen and stateswomen now face the daunting task of persuading Biden to step down gracefully. After a lackluster debate performance against former President Donald Trump, concerns over Biden’s ability to lead have heightened. Doubts are now rising fast about his cognitive agility.