J. B. Pritzker

American billionaire businessman, philanthropist, and politician serving as the 43rd governor of Illinois since 2019. A member of the wealthy Pritzker family, which owns the worldwide hotel chain Hyatt, Pritzker is based in Chicago and has started several venture capital and investment startups like the Pritzker Group, where he is a managing partner. His estimated personal net worth is $3.6 billion.

Pritzker has been a longtime financial supporter and active member of the Democratic Party. He became the Democratic nominee for governor of Illinois in the 2018 gubernatorial election after winning a crowded primary election. He defeated Republican incumbent Bruce Rauner in the general election on 6 November 2018, and took office on 14 January 2019. Pritzker was reelected in 2022.

In 1993, Pritzker married Mary Kathryn "M. K." Muenster, whom he had met in Washington, D.C., when she worked as an aide to U.S. Senator Tom Daschle. She is one of three children of Theodore and Karen Muenster. Her father unsuccessfully ran for the U.S. Senate in 1990. They live in Chicago's Gold Coast neighborhood with their two children.