Since when does the son take over when the prime minister dies?

He won the election he was up against i think 3 or 4 other people it didn't happen all of a sudden he had a good team behind him watch it again i had to watch it a few times to get some parts of it myself but what a great peice of work. I really enjoyed it i'm looking forward to the second one, i'll have to wait for the dvd because i don't have the channel here in ireland well i would if i had sky ah well good things come to those who wait or so i'm told.

...either by a general election with him as leader of the party or through an internal leadership change within the part in power.