Is it time for The ANC to be humbled in a election?

I was reading an article on the upcoming South African elections and started to worry about the future of african Democracy. Can a nation ruled by a 70% plurality really be considered democratic? Can democracy exist without opposition?

I'm just musing and really curious about everyone elses opinion on one party rule, even if it is democratic.

Apartheid went on for years and this was a very small minority that ruled with brutality over the overwhelming majority since 1948. There is another party emerging in South African that threatens ANCs two thirds majority in Parliment(Congress of the People).

Countries without inclusive democratic traditions need to be extra careful to guard their democracy, as they are the ones most vulnerable to democratic erosion from within.

There is already an opposition party that's preventing the ANC from getting a two thirds majority in Parliment.

One party enjoying massive popular support is not undemocratic or evidence of wrongdoing on the part of the ANC, but it is bad for South Africa.

South Africa does not currently have a viable opposition. It desperately needs one. And the only place it's going to get one is from within the ranks of the ANC.

I'm not sure it matters too much what lines the ANC splits along - it would be good if it split over matters of principle (into an ANC (left) and an ANC (right) or something) but even splitting between supporters of Mbeki and supporters of Zuma would do. The important thing is that politicians feel that if they displease the electorate they will lose power.