Harris-Walz vs. Trump-Vance: It's now an expanded battle for both the Sun Belt and Rust Belt

The next 90 days of the presidential campaign will see a fierce competition in the Rust Belt and the Sun Belt. Vice President Kamala Harris aims to secure "Blue Wall" states such as Wisconsin, Michigan, and Pennsylvania by selecting a Midwestern governor as her running mate. These states are crucial for Democrats to retain the White House.