Democrat or Republican, our capitalist system has always reflected the next party in the White House.

Take a look at some "also-rans" who have influenced the outcome of elections or shifted the national conversation.

Bill discusses the power of independent thinking with Senator Bernie Sanders and Green Party candidates Jill Stein and Cheri Honkala.

The Green Party candidates for president and vice president talk about the impact of independent thought on politics and democracy.

Bill and the longtime Independent talk about jobs, the economy, health care, and the impact of big money on the major political parties.

Moral psychologist Jonathan Haidt offers his take on morality vs. strategy in the voting booth.

We hear from four candidates excluded from presidential debates: Ralph Nader (Reform Party), Michael Peroutka (Constitution Party), David Cobb (Green Party), and Michael Badnarik (Libertarian Party).

Bill Moyers interviews consumer advocate, author, and former presidential candidate Ralph Nader