If Saturn is in Jupiter’s sign and aspecting Sun, it will bestow the native administration abilities. If such a Saturn also becomes a Rajayogakaraka ( lord of Kendra and lord of Trikona) then it become icing on cake. Yogakaraka Saturn will be only helping Rajyakaraka Sun to obtain very high position in government administration. But one condition remember that : Saturn must aspect only the Sun. It should not look at other planets such as Mars etc.