On January 8, 2009, Christie filed papers to run for governor.[4] In the primary on June 2, Christie won the Republican nomination with 55% of the vote, defeating conservative opponents Steve Lonegan and Rick Merkt.[5]
On July 20, 2009, Christie announced that he had chosen Kimberly Guadagno, Monmouth Countysheriff, to complete his campaign ticket as a candidate for lieutenant governor. Guadagno, who was elected sheriff in 2007, had previously served on the Monmouth Beach Board of Adjustment, and also as an assistant U.S. Attorney for the District of New Jersey.[6]
Christie faced criticism for his acceptance of $23,800 in campaign contributions (and the resulting $47,600 in public finance matching funds) from a law firm that received a federal monitor contract while Christie served as the state's U.S. Attorney. In 2006, Christie approved a deferred prosecution agreement with the University of Medicine and Dentistry of New Jersey after it admitted committing Medicare fraud. He appointed Herbert Stern, a former federal judge and prosecutor, to the $500-per-hour post of federal monitor. Christie's close friend and fundraiser John Inglesino, a partner in Stern's law firm, was paid $325 per hour for his work as counsel on the monitorship. Stern's law firm, Stern and Killcullen, received reported more than $10 million in legal fees from the contract. Stern, Inglesino, a third partner, and their wives have since each made the maximum contribution of $3,400 to Christie's gubernatorial campaign.[7][8][9]
On November 3, Christie defeated incumbent Democratic governor Jon Corzine by a margin of 48.5% to 44.9%, with 5.8% of the vote going to independent candidate Chris Daggett.[10]