Democrats were jolted out of complacency about president Joe Biden’s age with his alarming performance during his first debate against Donald Trump, and many party members are wondering what other options there might be. The 81-year-old president and his supporters have brushed off concerns about his age by citing his accomplishments and pointing out that Trump is only three years younger, but the weaknesses cited by Biden’s detractors were on clear display from the moment he first opened his mouth, reported Washington Post columnist Aaron Blake. “The Democratic Party has spent much of the 202…