The Rema in c. m. 163:1 says when a city votes the people get together and voice their vote. Also the beer heitiv in 231 says the same and adds that if the shamash sends a paper to each house to vote yes or no it is not valid the would seem from r. akiva eiger there the reason for that so it can be discussed for or against and then make a valid choice. in a bungalow colony where every one owns their own unit the by-laws say you can send a paper to each owner to vote without having any discussion about it. some of the votes are about charging some owners extra money. can there be such a rule which is against the rationale of the shulchan aruch.
The principle of following the majority is noted by the Rosh (7:5), and ruled by the Rema. See also the Chasam Sofer (Choshen Mishpat 61), who writes that in principle a minority opinion can also object, but agrees with the ruling because partners originally join together with intention of following the “rules of the game” (of going after the majority vote).
In the case of the bungalow colony the came is true: Those who buy a property does so with intention of following the by-laws, and therefore the decision of the majority is binding, in spite of the fact that there is no prior discussion.