Not scientific but you can make them reqret asking questions you know they don't want the answer to. When you get there, scroll towards the bottom -
Do you feel Florida's 'stand your ground' law is helpful or harmful?
http://www.cnn.com/US/?hpt=hp_bn2
Do you feel Florida's 'stand your ground' law is helpful or harmful?
http://www.cnn.com/US/?hpt=hp_bn2