he has consistently taken bad pr advice from questionable sources, and this is just another example.
almost nobody is going to consider a war in israel to be a ballot issue, except for right-wing christians. these dumb kids in the tents are just trying to get laid, or are so outside of the spectrum that they're unreachable.
the mainstream position in the united states is strongly in support of israel, and biden is in truth going to lose more voters in the middle than he's going to gain on the fringes.
let's be clear about this: these hamas sympathizers are the fringe of the fringe. i would label them as far right, even if they call themselves left wing. i couldn't tell the difference between these pro-hamas protesters and the kind of white supremacists you see organize in the deep south; if anything the white supremacists are less blatantly racist.
mainstream opinion in the united states is overwhelmingly pro-israel and has no sympathy for hamas at all and biden is going to get bludgeoned by trump on the point if he doesn't wake up to that fact.
it's worth pointing out that john kerry lost an election he should have easily won, and his position on the war on terrorism was a central part of that.