In IL the Dem's definitely picked up 4 Senate seats. That becomes interesting since with 36 votes (vs. 23 R) the Dems have a veto-proof majority there. Though the Gov is also a D, there has been some disagreement between the Dems in the legislature and Gov over the last four years. This may add an interesting twist.
There appears to be a gain of 1 House seat for the House Dems putting them at 66 - 52. There are two races where the margin is less than 200 votes and each party currently leads in one. These may take a couple weeks to sort out while counting absentee and provisional ballots.
Muon, am I to assume you won your race?