Cautionary note with these Trumpian approvals, Dubya won with 47% of the vote and was under 50%. If 2000, 2004 and 2016 taught us, voters like Dems initiatives, but too much spending on social programs is not very good either. At the time record number of voters are filing for disability benefits, Dems want to increase spending on Medicare
Several things wrong with this thinking:
The actual voters did vote for Democratic policies in 2000 and 2016--they just happened to not live in the right places to be counted as much as others. Also 2020 cannot be compared with either 2016 or 2000 with polling because there was literally no job approval polls--you had two non-incumbents running, so it was purely favorability. And Bush was hovering close to 50% when he won in 2004 (and was certainly not under water when the disapproval was factored in, even if he was below 50%) and that can't be said for Trump.