Yes, you can do this. What I was trying to show with the state configuration is that the app will display any layers that have been configured from your map, regardless of the level at which you have aggregated your data.
If you aggregate your data to the state level, add that data to the map, and configure the app to display that information, it will work. You can have a layer that shows the results at the precinct level, a layer that shows results at the county level, and a layer that displays results at the state level all in the same map, and all configured to display in the app.