If you want to understand why the party that liberated South Africa from white rule lost its parliamentary majority in the election this week, you need to look no further than Beauty Mzingeli’s living room. The first time she cast a ballot, she could hardly sleep the night before.

“We were queuing by 4 in the morning,” she told me at her home in Khayelitsha, a township in the flatlands outside Cape Town. “We couldn’t believe that we were free, that finally our voices were going to be heard.”

That was 30 years ago, in the election in which she was one of millions of South Africans who voted the African National Congress and its leader, Nelson Mandela, into power, ushering in a new, multiracial democracy.

But at noon on Wednesday, Election Day, as I settled onto a sofa in her tidy bungalow, she confessed that she had not yet made up her mind about voting — she might, for the first time, she told me, cast a ballot for another party. Or maybe she might do the unthinkable and not vote at all.

“Politicians promise us everything,” she sighed. “But they don’t deliver. Why should I give them my vote?”