I think if the poll says 'yes' and he does truly abide by it, I think it will show some honesty around the whole 'public town square' and 'for the people' rhetoric he has espoused. I'd be quite impressed.

However, he has a history of noble intents on Twitter (eg the 'end world hunger' thing) followed by lack of follow-through, so I can imagine a scenario where the poll comes out 'yes' and he doesn't abide by the results by calling foul play somewhere (bot accounts, multiple user accounts etc.)