1. In support of Abraham Lincoln's 1860 campaign:
John Gress / Reuters
2. In support of John F. Kennedy's 1961 campaign:
3. In support of Shirley Chisholm’s 1972 campaign:
Collection of the U.S. House of Representatives
4. In support of Ronald Reagan's 1980 campaign:
5. In support of John McCain's 2008 campaign:
Brian Snyder / Reuters
6. In support of Barack Obama's 2008 campaign:
Jae C. Hong / AP
7. In support of Barack Obama's 2008 campaign:
Jae C. Hong / AP
8. In support of Bill Clinton's 1992 campaign:
Independent Picture Service / Getty Images
9. In support of Bill Clinton's 1992 campaign:
Ron Jenkins / Getty Images
10. In support of Hillary Clinton's 2016 campaign:
Carlo Allegri / Reuters
11. In support of Donald Trump's 2016 campaign:
12. In support of Bernie Sanders' 2016 campaign:
Kevork Djansezian / Reuters
13. In support of Margaret Chase Smith's 1964 campaign:
David Frent / Getty Images
14. In support of John McCain's 2008 campaign:
Minnesota Historical Society
15. In support of Robert F. Kennedy's 1968 campaign:
Minnesota Historical Society
16. In support of Richard Nixon's 1968 campaign:
Terry Ashe / Getty Images
17. In support of Lyndon B. Johnson's 1964 campaign:
Blank Archives / Getty Images
18. In support of Franklin D. Roosevelt's 1932 campaign:
Blank Archives / Getty Images
19. In support of Ulysses S. Grant's 1868 campaign:
Library Of Congress
20. In support of Richard Nixon's 1972 campaign:
21. In support of Jimmy Carter's 1976 campaign:
Gerald R. Ford Presidential Museum
22. In support of Jimmy Carter's 1980 election:
Terry Ashe / Getty Images
23. In support of Barry Goldwater's 1964 campaign:
David Frent / Getty Images
24. In support of George Bush's 1992 campaign:
David Frent / Getty Images
25. In support of Gerald Ford's 1976 campaign:
Gerald R. Ford Presidential Museum
26. In support of Ralph Nader's 2000 campaign:
David Frent / Getty Images
27. In support Dwight D. Eisenhower's 1952 campaign:
Independent Picture Service / Getty Images
