While you have a lot of options listed for Hillary's running mate, one option that is not listed is "other" (someone not currently listed.)
referencing a recent quote from Hillary Clinton, she said she is searching "far and wide" for a running mate.
and she also said she is open to looking at "successful business people" as her vice president. Right now, Mark Cuban is the only business-person listed.
It's a very big world, and you have a very narrow list. So I am suggesting to add "other" as an option.