On Thursday night, ten Democratic candidates will gather for the third official debate of this primary season. This debate will only be one night and include only ten candidates, so it should be smoother and more useful for potential voters. However, it is still likely that much of the debate will be taken up by detailed discussions of policy proposals on issues like health care, gun regulations or the environment. These discussions are worthwhile, interesting and give a good sense of what the candidates believe, but the emphasis on details belies the reality that presidents don’t make policy. They are merely part of a process along with congress and in many cases the states and the courts. These detailed discussions of policies seem like the right subject for the debate, but there are other bigger picture questions that are probably more important. Below are three questions that Democratic voters should be asking their candidates, but that might not be raised on Thursday night.