Looking ahead, voters are also defining why the next few weeks could be critical.
On one hand, Harris has additional edges with the wider electorate that Mr. Biden did not: she's leading Trump on being seen as having the cognitive health to serve, a measure that was of course central to the campaign before Mr. Biden stepped aside.
And on policy generally, Harris is seen as a little different from Mr. Biden, opening some possibility of defining her stances for the electorate now, either way.
