Just found this beauty deep in my submission pile (from Howie H.):
What's great about this pie chart is the story it's trying to tell. Almost half of the electorate did not vote in Texas in the 2016 Presidential election. The designer successfully draws my attention to the white sector that makes the point.
There are a few problems.
Showing two decimals is too much precision.
The purple sector is not labeled.
The white area seems exaggerated. The four sectors do not appear to meet at the center of the circle. The distortion is not too much but it's schizophrenic: the pie slices are drawn with low precision while the data labels have high precision.
The following fixes those problems, and also adds a second chart to contrast the two ways of thinking: