At least where I live in the US, voters are asked to vote on city or state ballot proposals. These proposals appear on the ballot in a wall of text. They are also usually available online before election day for interested voters to read. These can be very complicated to parse - not only the language and technical terms in the text, but the policy itself and how it might affect different groups of stakeholders in the community and different existing policies and competing proposals. A voter might need to read a lot of news articles and opinion pieces to get the lay of the land on a particular issue. I think having a higher than sixth grade reading level would be more than helpful in understanding an issue and related ballot proposals.