PHOTOS: Democratic presidential candidates 1932-2012
PHOTOS: Democratic presidential candidates 1932-2012
Obama and Vice President Joe BIden were elected to a second term over Republican ticket of Mitt Romney and Rep. Paul Ryan of Wisconsin. (AP Photo/Jae C. Hong)
New York Gov. Franklin D. Roosevelt went on to win the first of four terms in the White House by beating incumbent Republican Herbert Hoover in the fall election. (AP Photo)
Roosevelt carried every state except Maine and Vermont as he won in a landslide over Republican Alf Landon. To Roosevelt’s left in this photo from the convention is his mother, Sara, and his wife, Eleanor. (AP Photo)
Roosevelt became the first president to win a third term when he defeated Republican businessman Wendell Wilkie. (AP Photo)
Roosevelt was re-elected as World War II neared its end. He died less than four months into his record fourth presidential term. (AP Photo/Edward Kitch)
Harry S. Truman, thrust into the presidency when Roosevelt died in 1945, won a surprise victory over the GOP nominee, New York Gov. Thomas E. Dewey. (AP Photo)
Gov. Adlai Stevenson of Illinois went on to lose the first of two straight contests to the GOP nominee, war hero Dwight D. Eisenhower. (AP Photo)
Stevenson lost by an even larger margin to Eisenhower in his bid to unseat the incumbent president. (AP Photo)
John F. Kennedy, the photogenic young senator from Massachusetts, represented a new generation of leader. He narrowly defeated Vice President Richard Nixon in November. (AP Photo
Lyndon B. Johnson took over after Kennedy was assassinated in 1963 and was elected in a landslide over GOP Sen. Barry Goldwater of Arizona. (AP Photo)
Bitterly divided by the Vietnam War, Democrats nominated Vice President Hubert Humphrey in a convention marred by violent protests outside the arena. Humphrey lost to Nixon in the fall. (AP Photo)
Sen. George McGovern of South Dakota won only Massachusetts as he lost in a landslide to incumbent President Richard Nixon. (AP Photo)
Georgia Gov. Jimmy Carter became the first president elected from the Deep South since Zachary Taylor in 1848, beating Gerald Ford, who became president when Nixon resigned in 1974. (AP Photo)
Carter lost his re-election bid to Republican nominee Ronald Reagan, a former actor and California governor who rode a conservative wave into the White House. (AP Photo)
Former Vice President Walter Mondale picked Geraldine Ferraro, to his left, to be the first woman to run on a presidential ticket. He lost in a landslide to Reagan. (AP Photo)
Democrats chose Massachusetts Gov. Michael Dukakis to run against Vice President George H.W. Bush. Bush made it three terms in a row for Republicans in November. (AP Photo/Doug Mills)
Arkansas Gov. Bill Clinton won the nomination and chose Al Gore, a fellow southerner, as his running mate. They unseated Bush in the fall election. (AP Photo/Mark Lennihan)
Clinton was nominated for re-election as the Democratic convention returned to Chicago for the first time since the turmoil of 1968. (AP Photo/Doug Mills )
Vice President Al Gore, right, chose Joseph Lieberman, the first Jewish candidate to appear on a national ticket as his running mate. They narrowly lost a disputed election to George W. Bush. (AP Photo/Scott Applewhite)
Massachusetts Sen. John Kerry tapped colleague John Edwards of North Carolina as his running mate. They went down to defeat in November as Bush was re-elected. (AP Photo/Steven Senne)
After a hard fought primary campaign against New York senator and former first lady Hillary Clinton, Obama went on to be elected the first black president. (AP Photo/Alex Brandon)
Obama and Vice President Joe BIden were elected to a second term over Republican ticket of Mitt Romney and Rep. Paul Ryan of Wisconsin. (AP Photo/Jae C. Hong)
Obama and Vice President Joe BIden were elected to a second term over Republican ticket of Mitt Romney and Rep. Paul Ryan of Wisconsin. (AP Photo/Jae C. Hong)
New York Gov. Franklin D. Roosevelt went on to win the first of four terms in the White House by beating incumbent Republican Herbert Hoover in the fall election. (AP Photo)
New York Gov. Franklin D. Roosevelt went on to win the first of four terms in the White House by beating incumbent Republican Herbert Hoover in the fall election. (AP Photo)
Roosevelt carried every state except Maine and Vermont as he won in a landslide over Republican Alf Landon. To Roosevelt’s left in this photo from the convention is his mother, Sara, and his wife, Eleanor. (AP Photo)
Roosevelt carried every state except Maine and Vermont as he won in a landslide over Republican Alf Landon. To Roosevelt’s left in this photo from the convention is his mother, Sara, and his wife, Eleanor. (AP Photo)
Roosevelt became the first president to win a third term when he defeated Republican businessman Wendell Wilkie. (AP Photo)
Roosevelt became the first president to win a third term when he defeated Republican businessman Wendell Wilkie. (AP Photo)
Roosevelt was re-elected as World War II neared its end. He died less than four months into his record fourth presidential term. (AP Photo/Edward Kitch)
Roosevelt was re-elected as World War II neared its end. He died less than four months into his record fourth presidential term. (AP Photo/Edward Kitch)
Harry S. Truman, thrust into the presidency when Roosevelt died in 1945, won a surprise victory over the GOP nominee, New York Gov. Thomas E. Dewey. (AP Photo)
Harry S. Truman, thrust into the presidency when Roosevelt died in 1945, won a surprise victory over the GOP nominee, New York Gov. Thomas E. Dewey. (AP Photo)
Gov. Adlai Stevenson of Illinois went on to lose the first of two straight contests to the GOP nominee, war hero Dwight D. Eisenhower. (AP Photo)
Gov. Adlai Stevenson of Illinois went on to lose the first of two straight contests to the GOP nominee, war hero Dwight D. Eisenhower. (AP Photo)
Stevenson lost by an even larger margin to Eisenhower in his bid to unseat the incumbent president. (AP Photo)
Stevenson lost by an even larger margin to Eisenhower in his bid to unseat the incumbent president. (AP Photo)
John F. Kennedy, the photogenic young senator from Massachusetts, represented a new generation of leader. He narrowly defeated Vice President Richard Nixon in November. (AP Photo
John F. Kennedy, the photogenic young senator from Massachusetts, represented a new generation of leader. He narrowly defeated Vice President Richard Nixon in November. (AP Photo
Lyndon B. Johnson took over after Kennedy was assassinated in 1963 and was elected in a landslide over GOP Sen. Barry Goldwater of Arizona. (AP Photo)
Lyndon B. Johnson took over after Kennedy was assassinated in 1963 and was elected in a landslide over GOP Sen. Barry Goldwater of Arizona. (AP Photo)
Bitterly divided by the Vietnam War, Democrats nominated Vice President Hubert Humphrey in a convention marred by violent protests outside the arena. Humphrey lost to Nixon in the fall. (AP Photo)
Bitterly divided by the Vietnam War, Democrats nominated Vice President Hubert Humphrey in a convention marred by violent protests outside the arena. Humphrey lost to Nixon in the fall. (AP Photo)
Sen. George McGovern of South Dakota won only Massachusetts as he lost in a landslide to incumbent President Richard Nixon. (AP Photo)
Sen. George McGovern of South Dakota won only Massachusetts as he lost in a landslide to incumbent President Richard Nixon. (AP Photo)
Georgia Gov. Jimmy Carter became the first president elected from the Deep South since Zachary Taylor in 1848, beating Gerald Ford, who became president when Nixon resigned in 1974. (AP Photo)
Georgia Gov. Jimmy Carter became the first president elected from the Deep South since Zachary Taylor in 1848, beating Gerald Ford, who became president when Nixon resigned in 1974. (AP Photo)
Carter lost his re-election bid to Republican nominee Ronald Reagan, a former actor and California governor who rode a conservative wave into the White House. (AP Photo)
Carter lost his re-election bid to Republican nominee Ronald Reagan, a former actor and California governor who rode a conservative wave into the White House. (AP Photo)
Former Vice President Walter Mondale picked Geraldine Ferraro, to his left, to be the first woman to run on a presidential ticket. He lost in a landslide to Reagan. (AP Photo)
Former Vice President Walter Mondale picked Geraldine Ferraro, to his left, to be the first woman to run on a presidential ticket. He lost in a landslide to Reagan. (AP Photo)
Democrats chose Massachusetts Gov. Michael Dukakis to run against Vice President George H.W. Bush. Bush made it three terms in a row for Republicans in November. (AP Photo/Doug Mills)
Democrats chose Massachusetts Gov. Michael Dukakis to run against Vice President George H.W. Bush. Bush made it three terms in a row for Republicans in November. (AP Photo/Doug Mills)
Arkansas Gov. Bill Clinton won the nomination and chose Al Gore, a fellow southerner, as his running mate. They unseated Bush in the fall election. (AP Photo/Mark Lennihan)
Arkansas Gov. Bill Clinton won the nomination and chose Al Gore, a fellow southerner, as his running mate. They unseated Bush in the fall election. (AP Photo/Mark Lennihan)
Clinton was nominated for re-election as the Democratic convention returned to Chicago for the first time since the turmoil of 1968. (AP Photo/Doug Mills )
Clinton was nominated for re-election as the Democratic convention returned to Chicago for the first time since the turmoil of 1968. (AP Photo/Doug Mills )
Vice President Al Gore, right, chose Joseph Lieberman, the first Jewish candidate to appear on a national ticket as his running mate. They narrowly lost a disputed election to George W. Bush. (AP Photo/Scott Applewhite)
Vice President Al Gore, right, chose Joseph Lieberman, the first Jewish candidate to appear on a national ticket as his running mate. They narrowly lost a disputed election to George W. Bush. (AP Photo/Scott Applewhite)
Massachusetts Sen. John Kerry tapped colleague John Edwards of North Carolina as his running mate. They went down to defeat in November as Bush was re-elected. (AP Photo/Steven Senne)
Massachusetts Sen. John Kerry tapped colleague John Edwards of North Carolina as his running mate. They went down to defeat in November as Bush was re-elected. (AP Photo/Steven Senne)
After a hard fought primary campaign against New York senator and former first lady Hillary Clinton, Obama went on to be elected the first black president. (AP Photo/Alex Brandon)
After a hard fought primary campaign against New York senator and former first lady Hillary Clinton, Obama went on to be elected the first black president. (AP Photo/Alex Brandon)