Then the chart should say "versus" instead of "to". I watched the interview and I didn't hear Kamala being the catalyst, either. So either the title OP made is a lie or I'm missing something. Because her presidential run in 2019 is not her acceptance of nomination a week ago in 2024.
Watch the video again?
0:11 "Up more than 175% in 13 states. That's compared to the same time in 2020."
2:33 "Our analysis started on July 21, which is the day that President Biden announced that he would be withdrawing from the race and Kamala Harris announced her candidacy. And so that moment seems to be a potential tipping point in this race where we're seeing suddenly Democrats saying 'i'm fired up, i want to participate.' And since then you've seen Democrats out registering Republicans."
I agree the chart could have been more informative, but the guy from the video is making the rounds going deeper into the data analysis and he confirmed on The Daily Beast podcast that its a comparison between two different weeks during an election year.
As striking new information suggests Kamala Harris is inspiring many new voters to register, a top Democratic analyst explains why this is grounds for optimism about beating Trump.
newrepublic.com
1:51 "You've compared registration numbers for the week of July 21st of this year with the same week of the 2020 campaign. You've found explosive changes among key demographics."