In our in-depth conversation with Democratic presidential candidate Bernie Sanders, the senator from Vermont, addressed a variety of topics, including his performance in the recent CNN debate, his stance on gun control and the remarkable grassroots effort that has propelled the rise of his campaign.

One of his potential opponents is, of course, Vice President Joe Biden. In the clip below, Sen. Sanders shares his thoughts on the prospect of a Biden run, as speculation that the V.P. will join the presidential race reaches a boiling point.