Swaziland, Kenya, Ethiopia, and Chad are at a bottom of a list of 28 African countries in a new United Nations survey of good governance.

The survey, released Tuesday, says the four countries ranked last for the way their governments handle political representation, economic management, human rights and corruption. The survey found that while African political governance is improving in some areas, there is still a long way to go.

It praises Botswana, Namibia, Mauritius, Ghana, South Africa, Senegal and Mozambique for practicing democracy.

The survey was based on the opinions of 50,000 African households and 2,000 experts to rank 28 of 53 countries on good governance.