VP choice makes a bigger difference for an older candidate, which might be why rumors are that Biden will be choosing his running mate very early in the process.
My hunch is part of his strategy is to make a strong showing in order to be the VP candidate for a non white male nominee.
It's maybe unlikely the whole ticket will be, but there's also a good chance that the top of the ticket will be either non-white, non-male, or both.
Every year for some time people have been saying Texas will turn and it has not happened.
A little analysis here: https://www.texasmonthly.com/burka-blog/latinos-wont-turn-te...