The engagements for each option are updated live in the Experience Editor.
The screenshot of options below shows two participants selected the correct answer (can you guess what the question was?).
Clicking the participant icon for the correct option reveals details of the participants who made that choice.
Clicking any of the table headers will sort the listing on column. Clicking the column a second time reverses the sorting order.
To run a "fastest answer" style round, sort engagements by Vote Time to find out who answered first.