Why aren't more young people in political leadership in Africa?

Today we are discussing a topic on many people's minds lately – thanks in part to Nigeria's recent elections: why aren't there more young people in political leadership in Africa?

Despite having 70% of the population under the age of 30, the average age of its politicians is almost double that, at 62 years old.

Which means that the continent with the youngest citizens has the oldest rulers. But can this be changed?

Alan Kasujja asks aspiring politician Serah Wanjiku Thiga in Kenya and Tanzania's veteran opposition leader Tundu Lissu whether age matters when it comes to Africa’s leaders.