CHICAGO (AP) — Former Illinois state Senate president and Democratic National Committee member Thomas Hynes, who was a powerhouse in Chicago politics for four decades, has died. He was 80.

Cheever Griffin, Hynes’ son-in-law, confirmed that Hynes died Saturday at Northwestern Memorial Hospital from complications of Parkinson’s Disease.

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Hynes’ political career spanned from 1970, when he was elected to the state Senate, to 2014, when he stepped down from his position on the DNC. Hynes spent 31 years as a Democratic committeeman for one of Chicago’s South Side wards.

Hynes also was Illinois campaign chair for President Bill Clinton’s re-election campaign in 1996. And he served as Cook County assessor from 1978 to 1997.

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Known as a cautious politician, Hynes made an uncharacteristically bold move in 1987 when he decided to run for Chicago mayor against incumbent Democrat Harold Washington under the banner of the newly-created Chicago First Party. It did not go well, and he dropped out two days before the election.

Two sons have followed him in the political world. Dan Hynes is a deputy governor to Illinois Gov. J.B. Pritzker. Matt Hynes is a former senior adviser to Chicago Mayor Rahm Emanuel.

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