re: #219 KGxvi
Most presidents had not seen the federal executive branch up close until they are sworn in. GHW Bush probably had the most experience with it, particularly among modern (post-Depression Era) presidents. This is one of the reasons, historically, governors would have an advantage, because they had run executive branches in the past (though none of the states have anywhere near the difficulties that you do at the federal level).
Secretary of State and Vice President have been the historical “internship”. FDR did well with SECNAV.