Why are Afghan candidates wooing the Hazara Vote?

Asia-pacific - Why are Afghan candidates wooing the Hazara vote? - France 24:

"The only woman on a heavyweight ticket this year is a Hazara. Habiba Sarabi, Afghanistan’s first female provincial governor, is standing as second vice president for Zalmay Rassoul, a former foreign minister who is outgoing President Hamid Karzai’s favoured candidate.
Karzai’s arch rival in the 2009 race, Abdullah Abdullah, also has a Hazara running mate this year. Mohammed Mohaqiq, Abdullah’s second vice president, is a veteran politician whose past posts include warlord in the Taliban era and planning minister in Karzai’s 2002 transitional government.
This year’s presidential poll marks the first time Karzai will not feature on the ballot since the 2001 fall of the Taliban as the Afghan president is constitutionally barred from running for a third consecutive term."