Kormos died Saturday morning at his Welland, Ont., home, according to Niagara Region Coun. Andrew Petrowski
Police and EMS were called to Kormos' home around 10:46 a.m. local time, according to The St. Catharines Standard.
Kormos was a criminal lawyer by trade and was first elected to the legislature in 1988.
After nearly 23 years in provincial politics, Kormos was elected in 2012 to represent Welland —50 kilometres west of Niagara Falls — on the council, winning by a with 73 per cent of the vote.
"He fought very articulately and cogently for anything he stood for," Petrowski said. "When Peter stood up nobody in council, including the chair, could control him. He was in control of that council and he would get his thought across come heck or high water."
Petrowski, a conservative politician, hosted a weekly talkshow on a local radio station with Kormos.
Kormos was named to cabinet when the New Democrats came to power under Bob Rae in 1990.
However, he feuded with Rae over public auto insurance and delivered an all-night speech on the insurance issue.
A series of events, including posing fully-clothed as a "Sunshine Boy" in a Toronto tabloid, led to his expulsion from cabinet in 1991.
Welland Mayor Barry Sharpe told The Standard that Kormos's death “will be felt right across the community."