Resurvey shows Harris up on Biden from earlier polls.
https://edition.cnn.com/2024/07/24/politics/cnn-poll-kamala-harris-donald-trump/index.html
CNN did a resurvey of its samples from April and June (they recontacted the same group of people). Harris gained 3 points on Biden from those polls. If anything that could understate things given that was before Biden's debate fallout, the assassination attempt, and the RNC convention.
She has more people voting FOR her than Biden did. Most voters for Biden were voting AGAINST Trump.
In particular her improvement on Biden comes from shifts among young voters, non-white voters, women, and independents now supporting her.
76% of Democrats want her as the nominee. Only 6% want someone else.
90% of Democrats approve of Biden's decision to withdraw.