Pre-conditioning people to embrace a last minute candidate swap at the appropriate time. It's a brilliant strategy. Let Biden take the hits and the weaker he looks the more people will want someone else, so when you actually show up with someone else you get a big morale boost to your base, meanwhile all the work your opponent did against Biden accomplished nothing because he's not running anymore.
Pre-conditioning people to embrace a last minute candidate swap at the appropriate time. It's a brilliant strategy. Let Biden take the hits and the weaker he looks the more people will want someone else, so when you actually show up with someone else you get a big morale boost to your base, meanwhile all the work your opponent did against Biden accomplished nothing because he's not running anymore.