In the Navamsa (D -9 chart) Jupiter is exalted but placed in the 8th house, this ensures power and authority, but may indicate some ill health during the period of Moon & Ketu.
In the Dasamsa (D-10 chart) Jupiter is the lord of Lagna placed in the 12th house under affliction from Saturn and Rahu indicating renunciation of power. Thus, during Jupiter dasa Saturn antardasa (November 1994 to May 1997) although BJP was the largest party in the Parliament, power had to be renounced by the party due to lack of support (Saturn) and Sri Advani also did not become a member of the Cabinet due to a court case that he won on a later date.
Mercury is very strong in the chart causing Vipareeta Yoga as the 8th lord in 12th house. It also conjoins lagnesh Mars and 10th lord Sun and will give their result of Rajyoga. Being in the 2nd house from Arudha Lagna (AL) and as lord of AL it gives Simhasan Yoga (Throne). It is exceedingly strong, placed in own sign in a quadrant in both Navamsa & Dasamsa. Thus, in Jupiter dasa, Mercury antardasa (May 1997 to August 1999) the BJP came to power and he is the Home Minister of the country. Thus all speculations about a premature end of BJP Government is not accepted, as this Simhasan Yoga will continue till August 1999.
The forthcoming period of Ketu antardasa in Jupiter dasa (August 1999 to July 2000) will see the courage, perseverance and daring (Parakrama Bala as Ketu is in 3rd from AL) of Sri Advani. Like a war elephant he will stride across the length and breadth of India. The terrorists of Kashmir will be defeated and peace will be re- established in the mountainous regions of India. As Ketu is in 6th house from Jupiter in Dasamsa the Secret services / Intelligence services of the country will receive a boost / feather in their cap and the service atmosphere / prospectus will become better. Subordinate services will also be upgraded or will have a cadre review. Some talk of instability and enemies plotting will trouble him till 8th January 1999, thereafter till November 1999, with the blessing of Sri Chamunda he will overcome all problems and will gain popularity.