. >> i m is toire gern o gmericant cheo elizabeth because no one on this stage wants to protect billionairesaire wants to protect billionaires. your idea is not the only idea. >> warren may be getting a boost from sanders. >> we are going to be mounting a vigorous campaign all over this country. that is how i think we can reassure the american people and i'm so happy to be back here with you this evening. >> reporter: this weekend sanders sat down with jonathan carl. he insisted at no point has he considered dropping out of this race because of his health. >> reporter: you and elizabeth warren have pretty close to identical positions on big issu issues. >> not quite. >> reporter: what do you say to those who say they would pick her because she's eight years younger, she didn't just have a heart attack and the positions you're pretty much the same. >> every american is going to make his or her choice about the candidate they want. elizabeth warren has been a friend of mine for some 25 years and i thisnk she is a very, ver good senator but there are differences between elizabeth and myself. >>