<Tr> <Th> Cook PVI </Th> <Td> D + 8 </Td> </Tr> <P> The 8th congressional district of Illinois is represented by Democrat Raja Krishnamoorthi . </P> <P> The congressional district covers parts of Cook, DuPage, and Kane counties, as of the 2011 redistricting which followed the 2010 census . All or parts of Addison, Barrington Hills, Bloomingdale, Carol Stream, Carpentersville, East Dundee, Elgin, Elk Grove Village, Glendale Heights, Hanover Park, Hoffman Estates, Lombard, Palatine, Roselle, Schaumburg, South Elgin, Streamwood, Villa Park and Wood Dale are included . These boundaries became effective on January 3, 2013 . </P> <P> Incumbent Representative Joe Walsh was drawn out of the district for 2012 by 2011 redistricting, although a candidate is not required to live in the district to be eligible to run for a seat in Congress . Democrat Raja Krishnamoorthi of Hoffman Estates announced his candidacy for the seat in late May 2011 . In July 2011, Democrat Tammy Duckworth also announced plans to run for the seat . Duckworth won the Democratic nomination on March 20, 2012 . Duckworth defeated Walsh in the general election on November 6, 2012 . </P>

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