Last week, Representative Mikie Sherrill handily won the Democratic Party’s nomination to run for governor of New Jersey, defeating her closest rival, Newark Mayor Ras Baraka, by double digits. But in the race’s final weeks, her rivals opened up a potent new line of attack—slamming Sherrill for the extraordinary growth of her portfolio. Over the past five years, according to financial disclosures, the former Navy helicopter pilot’s financial assets have at least tripled—boosted mostly by her husband’s compensation. Adding to the hit: In recent years, she paid a fine after a belated disclosure of two stock sales. Not a big deal, but an easy attack line.