It’s certainly a factor (imagine if Republicans had hitched their wagon to Bush in 2010) and will help reduce Democratic losses in Democratic-leaning states/districts in particular, but given that Trump would likely beat Biden if a hypothetical rematch were held this year, I don’t see why such a "two presidents mid-term" would result in a 2018-type Democratic wave in November? Seems like contradictory and wishful thinking to me.
Do you know he has lead in all the You Gov polls Biden and Biden is at the Highest Approvals yet in Rassy Tracking 47/52 Rs act like Biden is still at 33% no he isnt
Rassy not 42% it's 47/52%
https://www.rasmussenreports.com/public_content/politics/biden_administration/prez_track_aug22?fullbrowser