Tip: Import shape files with shpescape.com
Fusion Tables does not provide native support for import of ESRI shapefiles (.shp). Public government data describing boundaries of electoral districts, census tracks and many other geographies of public interest are often published as shapefiles. These data are useful for making intensity maps with custom boundaries.
You can use shpescape.com to import ESRI shapefiles (.shp) into a Fusion Table.