After helping vault Mr. Trump to the presidency in 2016, Wisconsin swung to Joseph R. Biden Jr. four years later. Republicans there have continued to take losses, including the re-election of Gov. Tony Evers, a Democrat, in November and a bruising loss last month in a consequential State Supreme Court race.
The Saturday event for Mr. DeSantis, an evening fund-raiser for the Republican Party of Marathon County where he will speak about his memoir, is sold out with more than 560 attendees, according to organizers.
“It’s not just Marathon County,” said Kevin Hermening, the county party’s chairman. “We have people traveling in from Chicago, Minneapolis, Madison, Milwaukee and Green Bay,” he said. “There is a real interest in listening to somebody who represents the next generation of conservative thought.”
Mr. DeSantis may use the Wisconsin dinner to highlight his family’s Midwestern roots: His mother is from Youngstown, Ohio, and his wife, Casey DeSantis, is also from Ohio. His father was raised in western Pennsylvania.
Mr. DeSantis, who has spent most of his life in Florida, recently started to emphasize his ties outside the state.
“I was geographically raised in Tampa Bay, but culturally my upbringing reflected the working-class communities in western Pennsylvania and northeast Ohio — from weekly church attendance to the expectation that one would earn his keep,” Mr. DeSantis says in his memoir, “The Courage to Be Free,” which he is promoting nationwide. “This made me God-fearing, hard-working and America-loving.”
Saturday’s fund-raiser is not a high-dollar affair, allowing Mr. DeSantis to talk directly to his party’s base. Individual tickets cost $75. A table of eight went for $1,000. Representative Tom Tiffany, a Republican who represents the area in Congress and has not made a presidential endorsement, will introduce Mr. DeSantis.
