Biden ending his campaign is one thing; Biden *resigning* would mean:
a) endless GOP House "investigations" on Kamala Harris "covering up" Biden's mental state;
b) the GOP House and broken Senate both have to confirm the new VP, they won't, and GOP will blame Dems.
It's simply not a viable plan.
I think you basically have the same issues with Biden withdrawing; it practically invites the House GOP to ask how Biden can be fit for office, yet unable to campaign.
Also, the DC press won't care—they'll run endless "cover up" stories in either case.
But what do we care whether the GOP says Biden is unfit if he's not running for reelection? I don't think this would happen. Once he became a lame duck he would get an immediate halo like Obama in 2016.
