At the link below are the official roll call votes for Senate Bill 10, the bill which eventually passed marriage equality in Illinois. The state house vote took place Nov. 5, 2013, while the state senate voted Feb. 14, 2013.
Many of the below senators and representatives are either up for reelection or running for other offices on Tue., Nov. 4.
View at 09800SB0010_02142013_001000T.pdf.
View at 09800SB0010_11052013_003000T.pdf.
Images courtesy of www.ilga.gov.