Question: Richard Jason Satawk "R. J." Harris, is a United States Army National Guard warrant officer, politician, law student and former Air Traffic Controller, in 2010, he unsuccessfully challenged which incumbent Republican, for the Republican Party nomination in the primary election for Oklahoma's 4th congressional district?

full_context: Document 1: Gary Johnson presidential campaign, 2012: The 2012 presidential campaign of Gary Johnson, the 29th Governor of New Mexico, was announced on April 21, 2011. He declared his candidacy for the 2012 Republican Party nomination for President of the United States. On December 28, 2011, Johnson withdrew his candidacy for the Republican nomination, and declared his candidacy for the 2012 presidential nomination of the Libertarian Party. The 2012 Libertarian National Convention was held during the first weekend of May 2012. On May 5, 2012, after promoting his libertarian-oriented political positions to delegates, Johnson received the most votes at the convention and became the official 2012 Libertarian presidential nominee. On November 6, 2012, Johnson received just under 1% of the popular vote in the general election, amounting to more than 1.2 million votes, more than double what the Barr/Root ticket received in 2008. This was the most successful result for a third-party presidential candidacy since 2000, and the best in the Libertarian Party's history by vote number at the time. (Johnson ran again in 2016 and received nearly four times his 2012 vote total.)
Document 2: Jeff Harris (politician): Jeff Harris (born October 7, 1964) is an attorney and a Missouri Democratic politician. He represented the 23rd District of Missouri in the Missouri House of Representatives from 2003–2009 and ran unsuccessfully for the office of attorney general in 2008. He served as Minority Floor Leader before giving up the post in order to focus more time on the attorney general race.
Document 3: John Cornyn: John Cornyn III (born February 2, 1952) is an American politician, lawyer and the senior United States Senator from Texas, serving since 2002. He is a member of the Republican Party and the current Senate Majority Whip for the 115th Congress. Cornyn previously served as Chairman of the National Republican Senatorial Committee from 2007 to 2011.
Document 4: R. J. Harris: Richard Jason Satawk "R. J." Harris (born November 16, 1972) is a United States Army National Guard warrant officer, politician, law student and former Air Traffic Controller. He was a candidate for the Libertarian Party's 2012 nomination for President of the United States. In 2010, he unsuccessfully challenged incumbent Tom Cole for the Republican Party nomination in the primary election for Oklahoma's 4th congressional district. He ran as an independent candidate for the same congressional seat in 2012.
Document 5: Jerry Moran: Gerald W. Moran (born May 29, 1954) is the junior United States Senator from Kansas and a member of the Republican Party. He served as Chairman of the National Republican Senatorial Committee for the 113th U.S. Congress, during which he led successful Republican efforts in United States Senate elections, 2014, producing the first Republican Senate majority since 2006. Previously, he served as a member of the United States House of Representatives, representing 2=nd
Document 6: Mark Bircher: Mark Bircher is a retired Marine Corps Reserve brigadier general, commercial pilot (Boeing 777), lawyer, scholar, and former Blue Angels pilot. He was a Republican Party candidate in Florida's 13th congressional district special election, 2014. He was the Republican candidate for the 2016 election in Florida's 13th congressional district.
Document 7: Political positions of Rand Paul: Rand Paul is a member of the Republican Party, a U.S. Senator representing the state of Kentucky, and a former candidate for President of the United States. He received a score of 100% from the American Conservative Union in 2012, and his voting record was rated 26% liberal in 2011 by National Journal.
Document 8: Tom Cole: Thomas Jeffery Cole (born April 28, 1949) is the U.S. Representative for Oklahoma 's 4 congressional district , serving since 2003. He is a member of the Republican Party. He is a Deputy Majority Whip. The chairman of the National Republican Congressional Committee (NRCC) from 2006 to 2008, he was, during his tenure, the fourth-ranking Republican leader in the House. As of 2015, Cole – a member of the Chickasaw Nation – is one of only two registered Native Americans in Congress (the other being fellow Oklahoman Markwayne Mullin).
Document 9: Tom Coburn: Thomas Allen "Tom" Coburn (born March 14, 1948) is an American politician and medical doctor. A member of the Republican Party, he was the junior United States Senator from Oklahoma.
Document 10: John Thune: John Randolph Thune (born January 7, 1961) is an American politician and senior United States Senator from South Dakota, a member of the Republican Party. He previously served as a United States Representative for South Dakota 's at-large congressional  . He became South Dakota's senior senator with the retirement of Tim Johnson in 2015. He is South Dakota's senior senator, having served as the GOP's Chief Deputy Whip in 2006, chairman of the Republican Policy Committee in June 2009, and Republican Conference Chairman in 2011, the third-ranking position in the Senate. He has worked in politics and civic organizations since completing his MBA graduate degree. He is also the current dean of South Dakota's congressional delegation.
Document 11: Dick Harris: Richard M. Harris (born September 6, 1944) is a Canadian politician. He was a Member of Parliament from 1993 to 2015 and sat as a member of the Conservative Party of Canada. He was previously member of the Reform Party of Canada and the Canadian Alliance. From 2004 to 2015, he represented the electoral district of Cariboo—Prince George, and formerly represented Prince George–Bulkley Valley. He was first elected during the 1993 federal election and was re-elected in 1997, 2000, 2004, 2006, 2008 and 2011. He challenged Reform Party leader Preston Manning for leadership when Manning proposed merging the party with the Progressive Conservative Party of Canada. He later campaigned for Stockwell Day to become leader. The most prominent position he held with his party was Chief Opposition Whip from 2001 to 2002. He generated controversy when he appointed an unelected, Conservative Party member to represent a neighbouring electoral district in governmental affairs, though the electoral district had an elected Member of Parliament, but from an opposition party. In Fiscal Year 2009-10 he was the top spending Member of Parliament, and had the largest hospitality and lowest advertising expenditures of any house member.
Document 12: Dick Randolph: Richard L. "Dick" Randolph (born April 10, 1936) is a longtime insurance agency owner in Fairbanks, Alaska who is best known as the first person to be elected to partisan office under the banner of the Libertarian Party with his election to the Alaska House of Representatives in 1978. He was re-elected in 1980. He was instrumental in the repeal of the state income tax and saving the Alaska Permanent Fund, through effective use of the initiative process. He was also the LP's gubernatorial nominee in 1982, garnering nearly 15 percent of the vote.
Document 13: Thomas Kean Jr.: Thomas Howard "Tom" Kean Jr. (born September 5, 1968) is an American Republican politician, the current Minority Leader of the New Jersey Senate, and a New Jersey State Senator. From 2001 until 2003, he was a New Jersey General Assemblyman, and represented the 21st Legislative District, which includes parts of Union, Morris, Somerset, and Essex Counties. In 2003, he was elected a New Jersey State Senator, and in January 2008 became Minority Leader of the New Jersey Senate.
Document 14: Kawika Crowley: David "Kawika" Crowley, born in 1952, was the Hawaii Republican nominee for the United States House of Representatives, 2nd congressional district in November 2012. A colorful and offbeat candidate, he achieved notability as the "homeless handyman" running for Congress. He was the first homeless person in Hawaii and perhaps any state to be nominated for Congress on a major party ticket. In 2014, Crowley again won the Republican primary race for the 2nd Congressional district in a contested race.
Document 15: Thad Cochran: William Thad Cochran (born December 7, 1937) is an American Republican politician. He is the current senior United States Senator from Mississippi (the third most-senior Senator and the second most-senior Republican member), first elected to the Senate in 1978, and the Chairman of the Senate Appropriations Committee, which he had also chaired from 2005 to 2007. He also chaired the Senate Agriculture Committee from 2003 to 2005. Cochran won reelection to a seventh term in 2014, after defeating Chris McDaniel in an intense primary run-off election. He is currently the dean of the Mississippi congressional delegation. He is also on track to become the longest serving Republican Member of Congress if he serves until 2019, surpassing Joseph Gurney Cannon, former Speaker of the House, who served for 46 years.
ground_truth: Thomas Jeffery Cole