A KML file of the districts was downloaded from opendata.firstmap.delaware.gov
And then converted to GeoJSON with the node project toGeoJSON.
togeojson de_districts_representative.kml > de_districts_representative.json
Then minified with the node project json-minify.
json-minify de_districts_representative.json > de_districts_representative.min.json
Finally, load the GeoJSON code with the leaflet-ajax plugin.