A graph plotting all individual votes can be displayed in ppvote Matrix. This scatter graph can be used as a discussion generator if not all participants agree.
On the heatmap, click the letter of the risk you wish to review. This will filter out all of the other risks and show you just the one you wish to focus on. Then click the letter again to show the scatter graph.
To return to the full heatmap, click escape.
To revote on the item, hover your mouse on the item letter and right click. You will see the options to revote on a single assessment or to revote from an assessment which will open the vote for the selected assessment, followed by all other assessments.