In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: What states did Strom Thurmond win in 1948? Passage 1:In what is considered by most historians as the greatest upset in the history of American presidential politics, Democratic incumbent President Harry S. Truman defeated Republican nominee Thomas E. Dewey. Going into Election Day, virtually every prediction (with or without public opinion polls) indicated that Truman would lose. Truman took most states outside the Northeast and Deep South, and won the popular vote by four points. Dewey won his party's nomination for the second straight election, defeating Ohio Senator Robert A. Taft and former Minnesota Governor Harold Stassen on the Republican convention's second ballot. Truman won the Democratic nomination on the first ballot, but the party's platform on civil rights caused a third party run by Dixiecrat Strom Thurmond, the Governor of South Carolina. Thurmond took four states in the Deep South. Former Vice President and former Democrat Henry A. Wallace ran as the Progressive nominee, but took only two percent of the popular vote.
Passage 2:Haydock was a graduate of Glasgow University and was a travelling salesman for the Clydevale Oil & Colour Company, Bridgeton. In September 1914, one month after the outbreak of the First World War, Haydock enlisted in the Queen's Own Cameron Highlanders. In January 1915, he was commissioned as a second lieutenant in the Cameronians (Scottish Rifles). Haydock saw action at Gallipoli and Palestine before being seriously wounded during an attack on Umbrella Hill during the Third Battle of Gaza on 1 November 1917. He did not return to his battalion until August 1918, after it had been deployed on the Western Front. Haydock was wounded during an attack on the Hindenburg Line, west of Queant on 2 September 1918 and died the same day at a Casualty Clearing Station in Bailleulval. He was buried in Bac-du-Sud British Cemetery, Bailleulval.
Passage 3:After the war ended in May 1945 Graf returned home in August 1946. Home was now in the Soviet occupation zone of what remained of Germany. During the next few years, under Soviet Military Administration, the region would become the Soviet sponsored German Democratic Republic, formally founded in October 1949, but in reality the creation of the new state was an iterative process. Already in April 1946, the merging of the old Communist Party (KPD) and more moderately left wing SPD into the new SED created the basis for a return to one-party government. Hugo Graf arrived back as a long-standing member of the Communist Party, now no longer illegal in Germany, and like thousands of others, lost no time in signing over his membership to the new Socialist Unity Party of Germany (SED / Sozialistische Einheitspartei Deutschlands). In 1946 he became a spokesman/consultant of the health department of the Central Secretariat with the interim administration, having become a department head by 1948. He was one of the founders of the Health Service of the Trade Union Federation (FDGB / Freier Deutscher Gewerkschaftsbund), and on 5 July 1949 he was appointed its first president, serving in this position till 1951.
1