So why doesn't he force Israel to allow the aid deliveries? Biden is the only person on earth that can stop the killing and all he has to do is withdraw his support from Bibi. Instead he makes hollow gestures and lets Israel undermine those gestures.

Many people are very uncomfortable with giving any amount of support to genocide. Couple that with an already apathetic voting population who was been told "this is the most important election of yoir life" every other year for the past 8 years, they would rather just stay home. Blame leftists who want to end the genocide in Gaza all you want, but at the end of the day, the Democrats have been botching their voter outreach.