The Oklahoma congressional delegation went all Republican for the first time after the 1996 elections and stayed that way for four years. In 2000, Democrat Brad Carson replaced Republican Tom Coburn in the U.S. House, and Boren won Carson's seat in 2004.
Boren announced his retirement last year. One of the few moderate Democrats left, Boren found himself increasingly at odds with his party's leaders; last year, he refused to vote for Rep. Nancy Pelosi for Democratic leader.
And though he bucked his party on many issues — including health care reform — he was a strong opponent of the House Republican budget in the past two years because of its changes to Medicare.
Rep. James Lankford, R-Oklahoma City, won a second term Tuesday, defeating Democrat Tom Guild, of Edmond, and two independents in the district that includes most of Oklahoma County and Seminole and Pottawatomie counties.
With nearly all precincts reporting, Lankford had 59 percent; Guild had 37 percent; and independents Pat Martin, of Jones, and Robert T. Murphy, of Norman, had 4 percent combined.
Lankford, 44, has quickly become a favorite of top House Republicans and may seek a leadership post in the next Congress.
Rep. Tom Cole, R-Moore, who has been in the House since 2003, defeated Democrat Donna Bebo, of Fletcher, and independent R.J. Harris, of Norman.
Cole, whose district includes Tinker Air Force Base and Fort Sill, serves on the subcommittee that oversees spending for the military. A Chickasaw, he is one of the strongest advocates in Congress for Indian tribes.
With most precincts reporting, Cole had 68 percent; Bebo had 28 percent; and Harris had 4 percent.
In the sprawling western Oklahoma district that includes much of the state's farm land, Republican Rep. Frank Lucas cruised to another term. With nearly all precincts reporting, Lucas had 75 percent; Democrat Timothy Ray Murray had 20 percent; and independent William M. Sanders had 5 percent.
Lucas, of Cheyenne, the chairman of the House Agriculture Committee, has been in the House since 1994. He pushed a new farm bill through his committee, but House Republican leaders refused to let the full House vote on it, even after farm programs expired.