The voter turnout in 2016 municipal elections among the participants of the impact study was reported as 64.3%. This figure is higher than the participation for the whole population (58%). The confidence interval (95% ) of 64.3% for the population is 63.6% to 69.9%, making this bias statistically significant [z(903)=3.84, p<.001)]. Referring to the the 2014 National and Provincial Elections, the turnout in the population was 73.5%. Turnout among the impact study participants was lower at 66.8% (note: some of the participants were too young to vote in 2014). The 95% confidence interval is 63.5% to 70%, and this bias is also statistically significant [z(903)=4.56, p<. 001)]. This shows that the characteristics of people who participated in the impact study are not representative of the South African population when it comes to their voting behaviour. Given that studies have consistently shown that voter turnout is lower among young people, especially in the 2016 elections (Tracey, 2016), the fact that the impact study participants are younger that the general population accentuates the bias on voting turnout.â&#x20AC;Š
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