He defeated incumbent Halvorson 57 percent to 43 percent. Halvorson pledged to help Kinzinger make a smooth transition.
At 32 years old, he will be the youngest person to hold that particular office since Chester Anton Chesney in 1949. Chesney was 33 when he took over the 11th district seat.
But it's not his first try at politics. Kinzinger was elected to the McLean County Board at the age of 20. He soon retired to join the United states Air Force as a pilot.