<Li> 0.1% other </Li> <Tr> <Th> Cook PVI </Th> <Td> R + 11 (until January 3, 2019) D + 13 (from January 3, 2019) </Td> </Tr> <P> Pennsylvania's 18th congressional district includes parts of Greene, Washington, Allegheny, and Westmoreland counties . The district is represented by Conor Lamb, who was elected March 13, 2018 . </P> <P> The district is concentrated in the southern suburbs of Pittsburgh . It is predominantly white, although it contains a diverse range of suburbs . It is drawn in such a way that in some locations, neighborhoods and even streets are split between the 18th and the neighboring 12th and 14th districts . In parts of the eastern portion of the district, one side of the street is in the 12th while the other side is in the 18th . In the west, one side of the street is in the 14th while the other side is in the 18th . </P>

Who is included in the 18th congressional district