On July 21, 2024, President Joseph Biden of the Democratic Party announced the end of his candidacy and supported his deputy, Ms. Kamala Harris, as the US presidential candidate. After Mr. Biden’s announcement, the amount of money poured into Ms. Harris’s campaign fund immediately skyrocketed. Her campaigns in the battleground states are Georgia, Pennsylvania, Wisconsin, Michigan, Arizona , Nevada becomes festivals with tens of thousands of participants, even in remote places like Eau Claire (Wisconsin), or under the scorching sun in Arizona and Nevada.

The excitement of Democratic voters increased when Ms. Harris chose Mr. Tim Walz, governor of Minnesota, as her running mate. Young voters who just a few days ago were bored and reluctant to go out, now lined up in long lines of cars, waiting to enter the election campaigns of the Harris-Walz partnership.