Jim Oberweis

James D. Oberweis (born June 10, 1946) is an American businessman, investment manager and politician. He is the owner of Oberweis Dairy in North Aurora near Chicago. He was a member of the Illinois Senate, representing the 25th district from 2013 until 2021.
Oberweis ran for the Republican nomination for the United States Senate in 2002 and 2004 and the Republican nomination for Governor of Illinois in 2006.
He was the Republican nominee for Illinois's 14th congressional district in a March 2008 special election and the November 2008 general election, losing on both occasions to Democrat Bill Foster.
He was first elected to the Illinois Senate in 2012. He ran for the U.S. Senate again in 2014, losing to Democratic incumbent Dick Durbin.
Oberweis announced he would run again for Illinois's 14th congressional district, challenging Lauren Underwood. On March 17, 2020, he won the Republican nomination. He lost the election by a narrow margin in November 2020.