Unlike the major party debates which get tons of news coverage and are aired in their entirety on network television, third party presidential debates generate little news coverage.
Yesterday, independent candidate Ralph Nader, Libertarian Party candidate Bob Barr, and Contstitution Party candidate Chuck Baldwin debated in Cleveland. CSPAN has the debate available online, but aside from them, most channels opted not to cover it. As a contrast to the highly scripted and exclusionary major party debates, there was no criteria used to exclude candidates.
Video from a previous third party debate is also available:
On Sunday, there is a third party vice presidential debate planned.