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.

In this speech on the Senate floor on June 27, 2012, Sanders addresses the anger Americans are feeling towards Wall Street.

Senator Bernie Sanders, a self-described Scandinavian-style socialist, says the president's record proves he's not one.

Vermont Senator Bernie Sanders describes his hope that the Democrats can be the "party of the country."

What will be the impact of Rahm Emanuel, President Obama’s former chief of staff, joining forces with a pro-Obama super PAC?

Political communications and messaging analyst Kathleen Hall Jamieson answered your questions about the conventions, fact checking and negative political advertising.

New York Times columnist David Brooks urges President Obama to come up with an "elevator speech" about his plans for the next four years.