A sample of what some entities and industries have given in Illinois campaign donations in the past 18 months — and how their issues have played out in the Legislature during that time.

AT&T

• Donation: $594,815

• Legislative action: Sweeping changes in telecom regulations to let the company focus on the wireless market.

Teachers unions (Illinois Education Association & Illinois Federation of Teachers)

• Donation: $2 million (combined)

• Legislative action: Rollback of threatened $1.3 billion in education funding cut, to $300 million

Illinois Coin Machine Operators Association

• Donation: $72,150

• Legislative action: Passage of legislation to allow 24-hour video gaming in truck stops.

Bruce Holland Construction of Swansea/University Town Center Development

• Donation: $20,000

• Legislative action: Passage of a special state tax-abatement deal to boost a planned commercial development at Marion.

Note: Dollar figures are based on donations from Jan. 1, 2009, to June 30, 2010.

Sources: Illinois State Board of Elections; Illinois Campaign for Political Reform