This feature provides national maps for all general elections in the Collection; state maps with county boundaries for presidential, gubernatorial, and Senate elections from 1980 to present; and state maps with district boundaries for House elections in beginning in 1998. State maps can be viewed by clicking the states on the national maps. For each national and state map, details on candidates (or party breakdown in the case of the national House maps) can be viewed by rolling the mouse over the map. To select and , use the drop-down menus above the map on the left. To browse through elections within an office or to go from a state map back to the national map, use the selections above the map on the right.