Electing the House of Representatives, 1840-2016, is one of eight maps (as of this write-up) from American Panorama, a historical geography project from the University of Richmond's Digital Scholarship Lab. This fascinating map traces election results for the House of Representatives over time and offers visualizations "showing changing patterns across regions and between urban and rural areas." Users can toggle between two different views. The map view shows the (likely more familiar) actual outlines and winners of the congressional districts, while the cartogram view shows "smaller districts and [the] difference between urban and rural areas by representing each as a bubble." The map's legend allows users to turn parties and flipped districts off and on, while the timeline at the bottom shows how the strength of political parties change over time. The timeline is accompanied by a brief summary of the displayed year's results and also enables users to change the election year being viewed. Users can click on individual districts for more detail about its electoral history. Electing the House of Representatives also includes information about their data sources and methodology, as well as an introductory history of the House of Representatives.