"I'm not going to be running for governor," said Paul Vallas, the former Chicago Public Schools superintendent.
Vallas lives in the south suburbs and commutes to his job as superintendent of the Recovery School District in New Orleans.
There also had been talk that Vallas might run against Cook County Board President Todd Stroger in the future. Sunday, he joined with Lt. Governor Pat Quinn in supporting Tuesday's referendum to force a constitutional convention, or "con-con," in Illinois.
Vallas says Illinoisans should vote "yes" so that work can get started to reform school funding and ethics laws.
"We're entering the 21st century with a 20th century document. If you want to effectuate real change a con-con will allow you to do that," said Vallas.
The opposition to a con-con is being led by former Gov. Jim Edgar and former state Comptroller Dawn Clark Netsch. They argue that the constitution is not the problem, it's the leaders in Springfield.