CHICAGO (CBS) — Entrepreneur and billionaire investor J.B. Pritzker was expected to formally jump into the race for governor on Thursday.

Those close to Pritzker told CBS 2 he will enter the Democratic primary, joining the field for the 2018 campaign.

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Pritzker joins several fellow Democrats who will bid to oust incumbent Republican Gov. Bruce Rauner. Chicago Ald. Ameya Pawar (47th), businessman Chris Kennedy, Illinois State Sen. Daniel Biss (D-Evanston), and Madison County school superintendent Bob Daiber already have announced bids for governor.

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As one of the state’s wealthiest individuals, Pritzker would be able to largely self-fund his campaign, just as billionaire Rauner did in 2014.

Pritzker has scheduled a 2 p.m. press conference for Thursday to make a “press announcement.” He had previously announced in March that he was forming an exploratory committee to weigh a bid for governor.

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