Question: John Robert Marks III, the former Mayor of Tallahassee, Florida was succeeded by an American politician who ecame the youngest person ever elected to what?

Passages:
Andrew D. Gillum (born July 26, 1979) is an American politician who serves as the mayor and formerly served as a city commissioner of Tallahassee, Florida.  At the age of 23, Gillum became the youngest person ever elected to the Tallahassee City Commission in February 2003.  Gillum has declared his candidacy for Governor of Florida in the 2018 election. Marcelo Llorente (born March 7, 1977 in Miami, Florida) was a Republican Representative in the House of Representatives of the U.S. state of Florida.  He was first elected in 2002 and re-elected in 2004, 2006, and 2008.  At the time of his election to the Florida House of Representatives, Marcelo was the third youngest person ever elected to that body.  He is the son of Cuban parents. Jeffrey Mark "Jeff" Friedman (1945-2007) was an American politician in the state of Texas.  Friedman was a campus political activist who became the youngest person ever elected to the City Council of Austin, Texas in 1971.  He is best remembered as the city's so-called "hippie mayor" who lead an alliance of young, ethnic, and left wing voters to capture of the reins of city government in 1975 — an event which helped cement Austin's place as a liberal bastion in a conservative state and region.  He was also the city's first Jewish mayor. Sarah Coral Hanson-Young (née Hanson; born 23 December 1981) is an Australian politician who has been a Senator for South Australia since July 2008, representing the Australian Greens.  She is the youngest woman ever to sit in federal parliament, winning election at the age of 25 and taking office at the age of 26.  She is also the youngest person ever elected to the Senate (several others have been appointed at younger ages). Peter Shapiro (born April 18, 1952) is a financial services executive, member of the Board of Directors of New Israel Fund and former politician from New Jersey.  He was the youngest person ever elected to the New Jersey General Assembly and went on to serve as Essex County executive and as the Democratic nominee for Governor of New Jersey in 1985 against incumbent Thomas Kean. Malcolm L. Derk III is a Republican Commissioner of Snyder County, Pennsylvania.  He is the youngest person ever elected to this position.  Snyder County is located in Central Pennsylvania and has a population of approximately 38,200 people. John Coyle White (November 26, 1924 – January 20, 1995) was an elected and appointed Democratic official from Texas.  He was the longest-serving Texas Commissioner of Agriculture, first elected in 1950 and serving until his resignation in 1977.  He was the youngest person ever elected to statewide office in Texas.  From 1977 to 1978, he was United States Deputy Secretary of Agriculture.  From 1978 to 1981, he was the chairman of the Democratic National Committee under U.S. President Jimmy Carter. Mathew Whynott is a Canadian politician, who was elected to the Nova Scotia House of Assembly in the 2009 provincial election.  From 2009 to 2013, he represented the electoral district of Hammonds Plains-Upper Sackville as a member of the New Democratic Party.  He is the youngest person ever elected as MLA in Nova Scotia.  Whynott is majoring in political science at St. Mary's University.  He lives in Lucasville with his wife Charlotte and daughter Morgan. John Robert Marks III (born July 25, 1947) is an American lawyer, politician, and former Mayor of Tallahassee, Florida from February 2003 until November 2014.  Marks is the longest serving mayor in Tallahassee's history.  He was elected to three consecutive terms as the city's Mayor, spanning nearly twelve years.  He won a third term in 2010, but declined to seek re-election for a fourth term in 2014.  He was succeeded by Andrew Gillum on November 21, 2014. Ed McCabe was born in Chicago, Illinois in 1938.  He is a founder of Scali, McCabe, Sloves, an American advertising agency of the 1960s and 1970s.  In 1974, he was elected to the One Club Hall of Fame at the age of 34.  He remains the youngest person ever elected to the One Club Hall of Fame.  He wrote several of the iconic ad campaigns of his era, including the Perdue Chicken, Volvo and Maxell advertising efforts.

Supporting sentences:
John Robert Marks III (born July 25, 1947) is an American lawyer, politician, and former Mayor of Tallahassee, Florida from February 2003 until November 2014.  He was succeeded by Andrew Gillum on November 21, 2014. Andrew D. Gillum (born July 26, 1979) is an American politician who serves as the mayor and formerly served as a city commissioner of Tallahassee, Florida.  At the age of 23, Gillum became the youngest person ever elected to the Tallahassee City Commission in February 2003.