
Gareth van Onselen
South African political consultant and pollster
4
APPEARANCES
3
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Oct 1, 2026
The Dark Art of Election Polling
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Rob RoseHOST
So how does it work in South Africa? Primarily it's now cell phone-based, right? I mean, is that not one of the issues with those historical poles that got it wrong is that they didn't adapt for how many people use cell phones versus landlines? I mean, how does it work in South Africa?

Gareth van OnselenGUEST
So there are three fundamental methods through which you can undertake market research.

Gareth van OnselenGUEST
We don't have enough internet access, or at least it's too expensive for people to be able to do it properly.

Gareth van OnselenGUEST
Almost everyone in the world over very high penetration rates of cell phones.
21 MINS LATER
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28:33Zukile MajovaHOST
So it's going to be a factor if that party truly convinces people that it is a colored party.
Decades of voting data shows ANC is in steady decline
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John MaythamHOST
But your analysis suggests that they are on track to do probably at least as well as they have in previous local government elections.

Gareth van OnselenGUEST
Yeah, I mean, for me, I think this is one of the most interesting findings in the track.

Gareth van OnselenGUEST
And it is counterintuitive, because if you look at the kind of public state of the EFF and the kind of stories that have surrounded them, Malema's conviction, people defecting away from the party, you know, it getting munched by MK in 2024, you would certainly be left with the impression that this was a party in a fundamental crisis.

Gareth van OnselenGUEST
I mean, it's not shooting the light side or anything, but it's never slipped into any kind of fundamental decline.

Gareth van OnselenGUEST
And on all the various indicators, there are a range of them in the by-election track.
[TOP STORY] DA majority in Joburg within reach, but hinges on voter turnout
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Jeremy MaggsHOST
Is a DA outright majority in Johannesburg genuinely achievable, or is it more of an aspirational campaign slogan?

Gareth van OnselenGUEST
[laughs] Okay, well, just to be clear, that's not my target, that's the DA's target.

Gareth van OnselenGUEST
Uh, Helen Zille argues that if the DA gets, I think it's just under 500,000 votes, uh, in other words, individual voters who are willing to vote for the DA, they will get a 51% majority.

Gareth van OnselenGUEST
The one is to assess whether that, the maths on that particular calculation are correct, and I think, I think it is.

Gareth van OnselenGUEST
I think if the DA does manage to get 500,000 votes, given the decline in turnout, it will be able to secure a 51% majority.

Gareth van OnselenGUEST
The next question is, of course, is that a realistic goal, however credible it is, and, and I think it is probably a stretch too far for the DA.

Jeremy MaggsHOST
Is she still the party's greatest electoral asset when it comes to this particular election, or do you think she still limits the party's appeal in key communities?
One of SA’s rarest wartime treasures heads to auction
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Jeremy MaggsHOST
Is a DA outright majority in Johannesburg genuinely achievable, or is it more of an aspirational campaign slogan?

Gareth van OnselenGUEST
Uh, Helen Zille argues that if the DA gets, I think it's just under 500,000 votes, uh, in other words, individual voters who are willing to vote for the DA, they will get a 51% majority.

Gareth van OnselenGUEST
The one is to assess whether that, the maths on that particular calculation are correct, and I think, I think it is.

Jeremy MaggsHOST
Is she still the party's greatest electoral asset when it comes to this particular election, or do you think she still limits the party's appeal in key communities?