The Contenders: 16 for '16 - S1 E1

2. Dean and Buchanan: The Flamethrowers

The presidential runs of Howard Dean and Pat Buchanan. Former Vermont governor Dean shook up the Democratic Party when he sought the nomination in 2004; and Buchanan did the same to the Republican Party with his 1992 and '96 bids before running as the Reform Party's candidate in 2000.

3. Dukakis and Romney: The Technocrats

The presidential bids of two governors from Massachusetts, Michael Dukakis (1988) and Mitt Romney (2008 and '12). Both were unprepared to combat the unflattering portraits their opponents painted of them.

4. Hart and Jackson: The Visionaries

During the Republican-dominated Reagan years of the 1980s, two charismatic Democratic presidential contenders came to the forefront, hoping to define their party as the one of vision, inclusion and big ideas. And even though the Reverend Jesse Jackson and Sen. Gary Hart both came up short in 1984 and 1988, their candidacies would help shape their party’s trajectory for decades to come.

5. Reagan and Goldwater: The Conservatives

Sometimes a losing candidacy can alter the political landscape irrevocably. Arizona Sen. Barry Goldwater’s visionary conservatism lost in 1964 but it would influence the Republican Party for half a century. Goldwater’s heir apparent, California governor Ronald Reagan’s own unsuccessful 1976 campaign helped to lay the groundwork for his presidency during the 1980s.

6. Perot and Nader: The Independents

One of the toughest tasks in modern presidential campaigns is mounting a competitive third party bid that can siphon attention—and votes away—from the major party candidates. Texas billionaire Ross Perot’s unconventional campaign would excite and disrupt the 1992 election, while consumer advocate Ralph Nader’s success in 2000 would leave many liberals labeling him a “spoiler.”

7. Ferraro and Palin: The Trailblazers

Before Hillary Clinton’s cracked the glass ceiling for presidential nominees in 2016, two other American women made their own mark on that ceiling: vice presidential nominees Geraldine Ferraro and Sarah Palin. Both trailblazing candidates would take their party convention by storms and add energy and excitement to their respective tickets before ultimately coming up short in November.

8. Bush and Obama: The Master Strategists

Despite vastly different backgrounds, George W. Bush and Barack Obama, two of the best campaigners in presidential history, both won two-term presidencies in the 21st century. Bush won a hotly contested Republican primary before narrowly beating Democrat Al Gore in 2000. Barack Obama went from relative obscurity to a history-making campaign in just a few years, riding a wave of hope and change to the White House.