President Biden's appearance at a campaign event in Pittsburgh on Monday served as a clear indication of the Democratic Party's current leadership structure. By stepping aside and allowing Vice President Kamala Harris to take the main speaking role, Biden signaled his support for her as the party's future leader.

During his brief remarks, Biden acknowledged the progress made during his administration and emphasized Harris's role in continuing that progress. He also pledged his unwavering support for Harris, stating that he would "do everything I can to help" her succeed.

Harris, who stood behind Biden during his speech, led the crowd in applause and appeared to relish the opportunity to address the gathering. Her presence at the event and Biden's public endorsement further solidified her position as the heir apparent to the presidency.

The event in Pittsburgh marked a significant moment in the Democratic Party's history, as it showcased the party's transition from the Biden era to the Harris era. With Biden's full support behind her, Harris is poised to lead the party into the future.