Question: Kweisi Mfume lost a primary campaign for the United States Senate seat that was being vacated by which American politician and attorney?
Context: Patty Jean Poole Judge (born November 2, 1943) is an American politician who had served as the Lieutenant Governor of Iowa from 2007 to 2011, and previously the Iowa Secretary of Agriculture from 1999 to 2007.  She unsuccessfully ran for re-election as Lieutenant Governor in 2010 after being elected to the office in 2006 with Chet Culver as Governor.  On March 4, 2016, she officially announced her candidacy for the Democratic nomination for the United States Senate seat currently held by Chuck Grassley and won the Democratic primary on June 7.  She lost the 2016 Iowa Senate election to incumbent Chuck Grassley. Kweisi Mfume (born Frizzell Gerald Gray; October 24, 1948) is an American politician and the former President/CEO of the National Association for the Advancement of Colored People (NAACP), as well as a five-term Democratic Congressman from Maryland's 7th congressional district, serving in the 100th through 104th Congress.  On September 12, 2006, he lost a primary campaign for the United States Senate seat that was being vacated by Maryland U.S. Senator Paul Sarbanes. Paul Spyros Sarbanes (born February 3, 1933) is an American politician and attorney.  A member of the Democratic Party from Maryland he served as a member of the United States House of Representatives from 1971 to 1977 and as a United States Senator from 1977 to 2007.  Sarbanes was the longest-serving senator in Maryland history until it was surpassed by Barbara Mikulski by a single day when her term ended on January 3, 2017. Sara Kyle (born October 21, 1952) is an American attorney and politician.  She is a member of the Tennessee Senate for the 30th district, which is composed of part of Memphis, having been elected in 2014 for an interim 2-year period of the remaining term of the senate seat held by her husband, who retired mid-term.  Kyle's term in office ends in 2016.  A Democratic primary for this State Senate seat will be held in August 2016 and a general election in November 2016. Richard Alan Berg (born August 16, 1959) is an American politician who served as the U.S. Representative for North Dakota 's at-large congressional  from 2011 to 2013.  Berg served on the House Ways and Means Committee.  He is a member of the Republican Party.  Before his election to Congress in 2010, he served in the state House of Representatives, with stints as Majority Leader and Speaker.  On May 16, 2011, Berg announced his run for the United States Senate seat being vacated by Democratic incumbent Kent Conrad but lost narrowly to Heidi Heitkamp on November 6, 2012. Roy Stewart Moore (born February 11, 1947) is an American lawyer, politician, and former judge.  He also is the founder and president of the Foundation for Moral Law.  Moore is the Republican nominee in the 2017 special election to fill the United States Senate seat vacated by Jeff Sessions upon Sessions's confirmation as Attorney General of the United States. John L. Patrick (born March 25, 1954) is an American politician and mechanic.  Patrick is a Democratic State Senator from Maine's 14th District, representing part of Oxford County as well as the town of Jay in adjacent Franklin County.  A resident of Rumford, Patrick graduated from nearby Mexico High School in 1972 and worked in the NewPage Paper Mill in Rumford for 29 years.  While working as a journeyman mechanic the mill, Patrick eventually became President of the United Paperworkers Union Local 900, the mill's union.  He also served on the board of directors of the Maine AFL-CIO.  He was first elected to the Maine House of Representatives in 2000; he served in the house until he was unable to run again due to term-limits.  He instead ran for the District 14 Senate seat vacated by Sen. Bruce Bryant.  He won both his 2010 Senate campaign with 68% of the vote.  In January 2012 he announced he would seek a second term. The 2010 United States Senate election in Indiana took place on November 2, 2010, alongside 33 other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections to fill Indiana's class III United States Senate seat.  Incumbent Democratic U.S. Senator Evan Bayh decided in February 2010 to retire instead of seeking a third term shortly after former U.S. Senator Dan Coats announced his candidacy for Bayh's contested seat.  No Democratic candidate submitted enough signatures by the deadline to run, leading Democratic officials to choose U.S. Congressman Brad Ellsworth to be the nominee.  The Libertarian Party nominated YMCA instructor Rebecca Sink-Burris, who had previously run against Evan Bayh in the United States Senate election in Indiana, 1998 but with less success than in this election.  Republican nominee and former U.S. Senator Dan Coats won the open seat. The 2014 United States Senate election in Oklahoma took place on November 4, 2014 to elect a member of the United States Senate to represent the State of Oklahoma, concurrently with the special election to Oklahoma's other Senate seat, as well as other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections. The 2006 United States Senate election in New Jersey was held on November 7, 2006.  Incumbent Democratic U.S. Senator Bob Menendez was elected to represent New Jersey in the United States Senate for a six-year term which ended in January 2013.  The seat was previously held by Democratic Governor of New Jersey Jon Corzine.  After he stepped down from his Senate seat and was sworn in Governor, Corzine appointed Rep. Menendez, who was sworn in on January 18, 2006.  Menendez was challenged by Republican Thomas Kean, Jr. and seven other candidates.  Filing for the primary closed on April 10, 2006.  The primary election was held on June 6, 2006.  Menendez became the first Hispanic to hold a U.S. Senate seat from New Jersey, and was the first Latino elected to statewide office in the state.
Answer: Paul Sarbanes