Democrats have struggled to transfer power to younger generations. After Biden's debate, that's likely to change.

• Biden's less-than-stellar debate performance against Trump set off alarms among many Democrats.
• It also shined a light on the party's past struggles in building a farm team of future leaders.
• The debate will likely push Democrats to rethink how power is transferred to younger generations.

After President Joe Biden's middling debate performance Thursday night, many Democrats began to panic.