Do you vote what is best for you or what is best for the country (or state or county...)

You’ll can be creative but unless what is best for you is always best for the country then this question is answerable. The question addresses those situations where there is a dilemma in the vote. Here is an imperfect example, there is an election to raise money for school bonds to fund schools. You have no kids. You are not a homeowner so you don’t care about (the way school quality affects) property values.