Trump won in 2016 because Hillary was so widely disliked even though the polls indicated she would win. Trump is the GOP's Hillary and will likely have a similar outcome.
In the same light, unless they have Joe step down and replace him with someone noteworthy and younger, as we get closer to the election Joe will be more hated than Trump.
Right now the number one issue is the economy, the second issue is the border and the third issue is abortion.
IMHO -- There is an obvious stark contrast between people's wallets now and during the Trump administration. Though Trump didn't build the wall, the crisis at the border is much more obvious and Trump had things somewhat under control in comparison. That leaves abortion; the issue was turned back to the states and that IS what Trump needs to make people understand and he needs to keep his mouth shut about making abortion a federal issue again.