Cory Booker, the mayor of Newark, N.J., and a quickly ascending Democrat on the national stage, won the party's primary race Tuesday night for U.S. Senate in New Jersey (Wall Street Journal). With 88% of the precincts reporting, Mr. Booker had 61% of the vote, topping state Assembly Speaker Sheila Oliver and U.S. Reps. Rush Holt and Frank Pallone. Mr. Pallone captured 20% of the vote, Mr. Holt 16% and Ms. Oliver 4%. Steve Lonegan, a former mayor in Bergen County, N.J., and past director of the state branch of the conservative Americans for Prosperity group, won the Republican primary.