Vice President Kamala Harris' presidential running-mate Minnesota Democrat Gov. Tim Walz last year signed into law a string of progressive bills across an array of policy issues.

As Harris narrowed her choice for a running mate, Walz emerged as the favorite of their Democratic Party's progressive wing, due in part to his legislative record.

Harris officially announced Walz on Tuesday as her pick for vice president, and the pair appeared at a rally in Philadelphia that evening at which Harris touted Walz’s credentials.

Ohio Sen. JD Vance, the Republican vice presidential nominee, said Harris “bent the knee to the far left of her party” in choosing Walz.