Dr. Dino Patti Djalal is a former Indonesian Ambassador to the United States.
 He resigned from his ambassador post in September 2013 to pursue a presidential primary bid.
 He served as Indonesia's Deputy Foreign Minister between July 2014 and October 2014.
Clifford Michael Sobel (born 1949, Brooklyn, New York) is an American business executive, financier, Republican fundraiser, U.S. diplomat and former ambassador.
 Most recently, he served as the United States Ambassador to Brazil.
 He was nominated for the post by President George W. Bush on May 23, 2006, confirmed by the United States Senate on June 29, 2006, and sworn in by Secretary of State Condoleezza Rice on July 20, 2006.
 He presented his credentials to the Brazilian Foreign Ministry on August 2, 2006.
 Ambassador Sobel is the 53rd Chief of Mission to Brazil.
 He resigned as ambassador in August 2009.
 From 2001-05, Sobel was the 62nd United States Ambassador to the Netherlands.
 President George W. Bush nominated him on July 3, 2001 and he was sworn in by Secretary of State Colin Powell on November 8, 2001.
 On December 5, 2001, he presented his credentials to Her Majesty Queen Beatrix.
The U.S. embassy in Karachi was established August 15, 1947 with Edward W. Holmes as Chargé d'Affaires "ad interim", pending the appointment of an ambassador.
 The first ambassador, Paul H. Alling, was appointed on September 20, 1947.
 Anne W. Patterson was nominated as United States Ambassador to Pakistan in May 2007, replacing Ryan C. Crocker who was appointed United States Ambassador to Iraq after completing three years of service in Pakistan.
 In 2010, her post was succeeded by Cameron Munter.
 The American ambassador is based in the U.S. Embassy, Islamabad.
Francis Vincent "Frank" Ortiz Jr. (March 14, 1926 – February 27, 2005) was an American diplomat.
 He was Ambassador of the United States to Barbados, and Grenada as well as Special Representative to Dominica, Saint Lucia, Antigua, St. Christopher-Nevis-Anguilla, and St. Vincent from 1977 to 1979, United States Ambassador to Guatemala from 1979 to 1980, United States Ambassador to Peru from 1981 to 1983, and United States Ambassador to Argentina from 1983 to 1986.
Karen Brevard Stewart (born 1952) is an American diplomat who is the current United States Ambassador to the Marshall Islands.
 She was nominated by President Barack Obama to be United States Ambassador to the Marshall Islands on November 5, 2015 was confirmed by the U.S. Senate on May 17, 2016.
 Stewart also served as United States Ambassador to Belarus from August 14, 2006 to March 12, 2008 and as United States Ambassador to Laos from November 2010 to August 2013.
Tulinabo Salama Mushingi (born August 4, 1956) is an American diplomat who currently serves a joint appointment as United States Ambassador to Senegal and United States Ambassador to Guinea-Bissau.
 He previously served as the United States Ambassador to Burkina Faso from 2013 to 2016.
 He also served in the executive offices of Secretaries of State John F. Kerry and Hillary Clinton.
 In February 2017, President Donald Trump nominated Mushingi to serve concurrently as United States Ambassador to Senegal and United States Ambassador to Guinea-Bissau.
 Mushingi had originally been nominated for the position by outgoing President Barack Obama in January 2017.
 When Trump took office, he withdrew Mushingi's nomination before renominating him for the same position.
 He was confirmed by the United States Senate by voice vote on May 18, 2017.
Kathleen Troia "K.T." McFarland (born July 22, 1951) is an American government official and commentator who is the nominee to become the next United States Ambassador to Singapore.
 McFarland served as Deputy National Security Advisor to President Donald Trump during the first months of 2017.
Wanda L. Nesbitt (born December 7, 1956) is a United States diplomat.
 A career Foreign Service officer, she has been appointed U.S Ambassador to several countries.
 From January 2002 to August 2004, Nesbitt was the United States Ambassador to Madagascar, the United States Ambassador to Cote d'Ivoire from 2007-2010 and she was appointed United States Ambassador to Namibia on September 24, 2010.
 She graduated from the University of Pennsylvania with a degree in international relations and French and also attended the National War College.
Harry Keels Thomas Jr. (born June 3, 1956 in the Harlem section of New York City) is an American diplomat and current United States Ambassador to Zimbabwe.
 He served as the United States Ambassador to the Philippines from 2010 to 2013.
 A former United States Ambassador to Bangladesh (serving from 2003 to 2005) and Director General of the United States Foreign Service (serving from 2007 to 2009), Thomas was designated by US President Barack Obama on November 19, 2009 to replace Kristie Kenney as Ambassador to the Philippines—the first African American to serve at that post.
 He was confirmed by the United States Senate on March 19, 2010 and presented his credentials to Philippine president Gloria Macapagal-Arroyo on April 27, 2010 He was then nominated and confirmed as the United States Ambassador to Zimbabwe on October 22, 2015.
 He was sworn in on December 8, 2015.
The 2006 United States Senate election in New York was held November 7, 2006.
 Incumbent Democratic U.S. Senator Hillary Rodham Clinton won, by a more than two-to-one margin, a second term representing New York in the United States Senate.
 Clinton was challenged by Republican John Spencer, a former Mayor of Yonkers, New York.
 Spencer won his party nomination by defeating former national security staffer K. T. McFarland in a primary.

Question: Which United States Ambassador post is the person who lost to John Spencer in a primary hoping to get?
Answer: Singapore