Sierra Club, Illinois Chapter
- State chapter of a leading conservationist and environmentalist organization
- http://illinois.sierraclub.org/

Illinois Issues Magazine
- A public affairs publication of the University of Illinois at Springfield. Features articles on public policy, surveys, archives, and letters to the editor.
- http://illinoisissues.uis.edu/

ISRA Political Victory Fund
- A political action committee (PAC) affiliated with the Illinois State Rifle Association. Includes a directory of endorsed and preferred candidates.
- http://www.isra-pvf.com/

Family Taxpayers Network
- Conservative multi-issue Illinois PAC which supports candidates who champion a good moral and economic climate for families and businesses
- http://thechampion.org/

Italian American Political Coalition of Illinois (IAPC)
- Founded in 1994 as a means of providing a political voice for Italian-American citizens within the State of Illinois.
- http://www.iapcvote.org/

Illinois Civil Justice League
- A coalition of Illinois citizens, small and large businesses, associations, professional societies, not-for-profit organizations and local governments seeking tort and civil liability reform.
- http://www.icjl.org/

Illinois Campaign for Political Reform
- Non-partisan group working to limit money in Illinois politics. Site includes updated campaign finance information on Illinois politicians.
- http://www.ilcampaign.org/