John Mondy Shimkus (born February 21, 1958) is the U.S. Representative for Illinois's 15th congressional district, since 1997. He is a member of the Republican Party. The district was numbered as the 20th from 1997 to 2003 and the 19th from 2003 to 2013.The district includes much of the southern portion of the state, including a portion of the Metro-East, which is the Illinois side of the St. Louis area.