Quality of governance and better leadership has led to southern states surging ahead of their northern counterparts, widening the gap in terms of per capita income and poverty between the South and North, says a study.Per capita incomes in the south (Tamil Nadu, Karnataka, Andhra Pradesh and Kerala) have risen fast and poverty has declined in recent years and the reason is quality of governance, better leadership and political stability, according to study conducted by the Public Affairs Centre.As of 2009-10, on an average, the weighted per capita income in the southern states (in constant 1993-94 prices) was Rs 19,531 whereas it was only Rs 8,951 in the northern states (Bihar, Madhya Pradesh, Rajasthan, Uttar Pradesh, Uttarakhand, Jharkhand and Chhattisgarh).In 2009-10, the average (weighted) poverty rate (combined for rural and urban areas) in the southern states was 19 per cent against 38 per cent in the northern states.The picture was very different fifty years ago. The rural poverty rates in the southern states in 1960 was 66 per cent compared to 55 per cent in the Hindi heartland states, the study said.Young people from the south were migrating to the northern towns in search of employment.Currently, the migration of southerners to the north has declined while northerners are moving in large numbers to the south in search of work, it said.Various factors have led to this turnaround over the last half century, the PAC study said.From the time of Independence, the south has been ahead of the north in literacy, infant mortality, life expectancy, fertility rate and other factors that contribute to greater productivity.Public Affairs Centre (PAC) is a not-for-profit organisation, established in 1994 with a mandate to improve the quality of governance in India.