There are quite a few (expensive) systems out there to provide your audience with keypads to vote on topics.
For most people this sort of expense is out of the question and you will be relying on hand counts.
How do you professionally show the results though?
You can of course close down your show edit a graph and re open. That looks tacky though!
PowerPoint Alchemy have a simple solution and there's even a totally working free demo!
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