Question: What political affiliation of the president whose favorite painter was Porfirio Salinas?

full_context: Document 1: John F. Kennedy: John Fitzgerald "Jack" Kennedy (May 29, 1917 – November 22, 1963), commonly referred to by his initials JFK, was an American statesman who served as the 35th President of the United States from January 1961 until his assassination in November 1963. Kennedy served at the height of the Cold War, and much of his presidency focused on managing relations with the Soviet Union. He was a member of the Democratic Party who represented Massachusetts in the United States House of Representatives and the United States Senate prior to becoming president.
Document 2: United States presidential election, 1964: The United States presidential election of 1964 was the 45th quadrennial presidential election. It was held on Tuesday, November 3, 1964. Democratic candidate and incumbent President Lyndon B. Johnson had come to office less than a year earlier following the assassination of his predecessor John F. Kennedy. Johnson, who had successfully associated himself with Kennedy’s popularity, won 61.1% of the popular vote, the highest win by a candidate since James Monroe’s re-election in 1820. It was the most lopsided US presidential election in terms of popular votes, and the tenth-most lopsided presidential election in the history of the United States in terms of electoral votes. No candidate for president since has equalled or surpassed Johnson’s percentage of the popular vote, and since 1820, only Abraham Lincoln in 1864, Franklin D. Roosevelt in 1936, Richard Nixon in 1972 and Ronald Reagan in 1980 and 1984 have won by a greater electoral vote margin.
Document 3: George Washington Baines: George Washington Baines, Sr. (December 29, 1809 – December 29, 1882), a maternal great-grandfather of U.S. President Lyndon Baines Johnson, was a Baptist clergyman in Arkansas, Louisiana, and Texas who served briefly as natural science professor and President of Baylor University at its first location in Independence in Washington County, Texas.
Document 4: José Martí (Lopez): José Martí is an outdoor sculpture of the Cuban nationalist leader and writer of the same name by Cuban artist Tony Lopez, installed at Hermann Park's McGovern Centennial Gardens in Houston, Texas, in the United States. The bust was acquired by the City of Houston in 1981.
Document 5: Ima Hogg: Ima Hogg (July 10, 1882 – August 19, 1975), known as "The First Lady of Texas", was an American society leader, philanthropist, patron and collector of the arts, and one of the most respected women in Texas during the 20th century. Hogg was an avid art collector, and owned works by Picasso, Klee, and Matisse, among others. Hogg donated hundreds of pieces of artwork to Houston's Museum of Fine Arts and served on a committee to plan the Kennedy Center in Washington, D.C. An enthusiastic collector of early American antiques, she also served on a committee tasked with locating historical furniture for the White House. She restored and refurbished several properties, including the Varner plantation and Bayou Bend, which she later donated to Texas arts and historical institutions who maintain the facilities and their collections today. Hogg received numerous awards and honors, including the Louise E. du Pont Crowninshield Award from the National Trust for Historic Preservation, the Santa Rita Award from the University of Texas System, and an honorary doctorate in fine arts from Southwestern University.
Document 6: José Arpa: José Arpa y Perea, 1858–1952, was an artist of Spanish birth who worked in Spain, Mexico, and Texas. Born in Carmona, Spain, he studied under Eduardo Cano de la Peña at the Museum of Fine Arts of Seville, where he won the Rome Prize three times, allowing him to study in Rome. During his years in San Antonio, Texas he influenced many painters, most notably Xavier Gonzalez, Octavio Medellín, and Porfirio Salinas. He painted in a realistic style, and was especially noted for his use of brilliant colors and his expertise in capturing the visual effects of sunlight. His work has been widely exhibited; ten of his paintings are in the collection of the San Antonio Museum of Art.
Document 7: Electoral history of Lyndon B. Johnson: Electoral history of Lyndon B. Johnson, the 36th President of the United States (1963–1969), 37th Vice President of the United States (1961–1963); United States Senator (1949–1961) and United States Representative (1937–1949) from Texas.
Document 8: Lyndon B. Johnson: Lyndon Baines Johnson ( ; August 27, 1908January 22, 1973), often referred to as LBJ, was an American politician who served as the 36th President of the United States from 1963 to 1969, assuming the office after serving as the 37th Vice President of the United States from 1961 to 1963. A Democrat from Texas, he also served as a United States Representative and as the Majority Leader in the United States Senate. Johnson is one of only four people who have served in all four federal elected positions.
Document 9: USS Lyndon B. Johnson: USS "Lyndon B. Johnson" (DDG-1002) will be the third and final "Zumwalt"-class destroyer built for the United States Navy. The contract to build her was awarded to Bath Iron Works located in Bath, Maine, on 15 September 2011. The award, along with funds for the construction of USS "Michael Monsoor" , was worth US$1.826 billion. On 16 April 2012, Secretary of the Navy Ray Mabus announced the ship would be named "Lyndon B. Johnson" in honor of Lyndon B. Johnson, who served as the 36th President of the United States from 1963 to 1969. Johnson served in the Navy during World War II, when he was awarded the Silver Star, and ultimately reached the U.S. Naval Reserve rank of commander. DDG-1002 is the 34th ship named by the Navy after a U.S. president.
Document 10: Joseph Santos: Joseph Santos (born 1965) is a contemporary American (European and Filipino descent) artist/watercolorist. He is known for his watercolor paintings of urban and industrial objects. His work has garnered many awards nationally, including the Paul B. Remmey award at the prestigious American Watercolor Society 138th international exhibition in New York City. His paintings have been exhibited in museums throughout the United States, including the Elmhurst Art Museum in Illinois and the Springfield Art Museum in Missouri. His watercolor paintings have also been featured in national publications including Southwest Art, The Artist's magazine and American Art Collector
Document 11: Hubert Humphrey: Hubert Horatio Humphrey Jr. (May 27, 1911January 13, 1978) was an American politician who served as the 38th Vice President of the United States from 1965 to 1969. Humphrey twice served in the United States Senate, representing Minnesota from 1949 to 1964 and 1971 to 1978. He was the Democratic Party's nominee in the 1968 presidential election, losing to the Republican nominee Richard Nixon.
Document 12: Presidency of Lyndon B. Johnson: The presidency of Lyndon B. Johnson began on November 22, 1963, when Johnson became the 36th President of the United States upon the assassination of President John F. Kennedy, and ended on January 20, 1969. He had been Vice President of the United States for days when he succeeded to the presidency. A Democrat, he ran for and won a full four-year term in the 1964 election, winning by a landslide over Republican opponent Arizona Senator Barry Goldwater. Following the 1968 presidential election he was succeed by Republican Richard Nixon.
Document 13: Retrato de Luis Muñoz Marín: Retrato de Luis Muñoz Marín (Portrait of Luis Muñoz Marín) is a 1977 oil painting by the Puerto Rican artist Francisco Rodón of the first democratically elected governor of Puerto Rico.
Document 14: Lyndon Baines Johnson Library and Museum: The Lyndon Baines Johnson Library and Museum, also known as the LBJ Presidential Library, is the presidential library and museum of Lyndon Baines Johnson, the 36th President of the United States (1963–1969). It is located on the grounds of the University of Texas at Austin, and is one of 13 Presidential Libraries administered by the National Archives and Records Administration. The LBJ Library houses 45 million pages of historical documents, including the papers of President Johnson and those of his close associates and others.
Document 15: Porfirio Salinas: Porfirio Salinas (November 6, 1910 – April 18, 1973) was an early Texas landscape painter who is recognized for his depictions of the Texas Hill Country in the springtime. He was one of the first Mexican American artists to become nationally recognized for his paintings. He was described by "The New York Times" as being United States President Lyndon B. Johnson's favorite painter. Works by Salinas are displayed in the Texas State Capitol, the Texas Governor's Mansion and in a number of museums including the Witte Museum in San Antonio, Texas and the Panhandle-Plains Historical Museum.
ground_truth: Democrat