Sen. Cory Booker endorsed Joe Biden for president, the Washington Post reports.
New York Times: “Mr. Booker’s endorsement comes 24 hours after Senator Kamala Harris of California endorsed Mr. Biden, and the two senators will appear with him at a rally in Detroit on Monday night. Mr. Booker will also campaign alongside Mr. Biden in Flint, Mich., earlier in the day and attend a fund-raiser with him.”


?Political Trivia
Eight moments in political history. Put them on a timeline.
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Four questions a day.
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