Wikipedia defines common sense as “knowledge, judgement, and taste which is more or less universal and which is held more or less without reflection or argument”
Try to avoid using this topic to express niche or unpopular opinions (they’re a dime a dozen) but instead consider provable intuitive facts.
Personally, in an ideal world (and it’s feasible to test on a small scale like an organization election), I would advocate a certain kind of mass conditional democracy where everyone has the right to vote but must answer some very basic objective questions to verify they understand (e.g.) the candidate positions and election basics. The answers can all be found in an educational pamphlet published collectively with candidate approval prior to the election. The goal is to allow as many voters as possible, so long as they can demonstrate a basic awareness of the situation.