If they didn't answer your question the way you wanted and you felt disapointed, you should have stood up, interupt whoever was talking, and say so..... put the boots to them.
Tell them you expected it to last until 6pm and therefore all their asses should remain where they are until then. Who cares if they're busy people, we all are and they should be greatful that you guys showed up in the first place.
I would have repeated my question "What makes you different from the other candidates? And don't give me a one-word answer, this isn't high school"
In the end, I would have voiced my disapointment and told them directly that they have wasted your time.
They don't like it? Too bad, they should listen to voters if they ever want to win anything.
What do I look for in a leader?
Nothing
I don't look for leaders. I look for those who want the job, listen to hear if they know what they're talking about, listen to hear if I agree with what they plan to do, and if everything lines up, I'll vote for them..... but they don't lead me or anybody else.... we lead them, they're supposed to do the work we want them to do, not the other way around, or they don't get our vote and they can hit the road.
And if I was in their shoes, I would expect nothing less then people to do the same to me...... that's how we keep our democracy in check.
Added:
For example, if I was up there instead of one of the others, I would answer your question as best I could, I would point out the differences in perspective between each topic. If I didn't answer you properly, I would expect you to stand up and tell me so and make sure I don't leave until I do...... tear me a new one if you must.... that's your right and that's what I would expect for what I am trying to do, which is to win your vote.