What is an informal qualification for the presidency?

Experience in government or military is often considered an informal qualification for the presidency because it provides candidates with insights and familiarity with political processes, leadership, and governance that are valuable in the role of a president. Candidates with such background may be seen as more capable of navigating the complexities of the executive office, including working with Congress, understanding policy issues, and managing national emergencies.

While having a law degree, being a member of the Supreme Court, or having previous experience as a Senator are formal qualifications or traditional paths, they are not requirements outlined in the Constitution. Instead, experience in government or military service enhances a candidate's perception as a leader and their understanding of national and international issues, thereby influencing voters' and party members' support.