this race and be part of the top tier. >> i ask you whether this intense focus of beating donald trump is the feature of the democratic electorate. it seems it has risen over the last few weeks given the way donald trump is behaving. >> sure. a couple things going on. one thing to watch, whether elizabeth warren and other candidates can ewrote joe biden's support among black voters. i tend to believe from covering politics for years, black voters in particular of a democratic party tend to be skeptical of the process. it takes time for them to get to know a candidate. in part, joe biden's support is based on support among black democrats, who just know him. they've seen him with barack obama, the nation's first black