Credit Capitol News Illinois file photo An Illinois Senate committee will hold its first hearing Wednesday to begin the process of redrawing congressional and state legislative districts in line with the 2020 census, despite the fact that detailed census data will likely be unavailable until September. Senate President Don Harmon, D-Oak Park, said in an interview that despite the delay by the Census Bureau, he expects the General Assembly to complete the process before the June 30 deadline set in the state constitution. “Well, the delay in the census data is certainly a new challenge, in a year full of challenges. But we're prepared to forge ahead with our obligation to draw a map before June 30, as we're required to do by the Constitution,” Harmon said.