Describe a George Wallace/Bernie Sanders voter

[VPH]

I think I came up with a good one:

A very conservative voter who, like a lot of other old Southerners, strongly identifies as a Democrat even though the party has drifted to the left. The voter has very traditional, conservative views, so has decided not to support Clinton for being a woman and not to support Biden for being the Vice President of an African-American. The only other viable Democratic option left is Sanders, so that's who he chooses to support.

Why not Webb?