congressman-at-large
n (Government, Politics & Diplomacy) (in the US) a member of the House of Representatives who was elected by the voters of an entire state as opposed to the voters of a single Congressional district
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014