The top reasons voters gave for not supporting Harris were that inflation was too high (+24), too many immigrants crossed the border (+23), and that Harris was too focused on cultural issues rather than helping the middle class (+17).
Other high-testing reasons were that the debt rose too much under the Biden-Harris Administration (+13), and that Harris would be too similar to Joe Biden (+12).
These concerns were similar across all demographic groups, including among Black and Latino voters, who both selected inflation as their top problem with Harris. For swing voters who eventually chose Trump, cultural issues ranked slightly higher than inflation (+28 and +23, respectively).
The lowest-ranked concerns were that Harris wasn’t similar enough to Biden (-24), was too conservative (-23), and was too pro-Israel (-22).
We have a lot of work to do. The general public doesn't understand their own economic system and blames everyone except Capitalists for their eggs costing $5 instead of $2.
Also those numbers around "Israel" and Palestine... 
Got any links for this? Seems like very useful analysis.
Here is the poll I’m talking about, and a couple articles talking about the poll 1 2 and then also this one from months ago because we’ve known this since before Kamala took over the campaign and have been screaming it the whole time.
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It’s a somewhat small poll but not that small and big enough to draw some conclusions from, even if it’s twice the margin of error it’s still a huge number.