Hi Jup, for President Reagan using astrology, i leave link to Joan Quigley:-
https://en.wikipedia.org/wiki/Joan_Quigley
The polls have narrowed in Britain, but is still likely Theresa May Queen Bee will win, perhaps with not as many mp's as she wants, so when she does go to inform the Queen, she may follow up with electional astrology....there are tempting times!
The next Prime Minister will have testing times regarding Brexit, so may be tempted to use Hermetic Astrology, but can be careful, it wouldn't do for her to be linked to electional astrology use!
The most tempting time to establish a government by visit to the Queen, involves your Avatar name Jup, ha ha!
At approx. 14:35pm in London on 9th June 2017, Sirius is culminating by paran, and Jupiter is approx. 5 degrees off Asc.
She may use projected measure on Sirius M.C., which would push time to nearly 3pm, but Jupiter would be nearer to Asc, roughly two degrees.
Graph showing projected Measure that i don't like, on private members download:-