If Hillary's VP list comes down to these five, which one should she choose?

[Heisenberg]

I'd say Kaine, but Castro is second.  Kaine has both gubernatorial and senatorial experience (as well as mayoral), while Castro has had only mayoral and cabinet experience.  Kaine, overall, I think would be a more experienced, better known choice.  He'd likely solidify Virginia (though it may already be safe D this year).  And Democrat McAuliffe would appoint the successor.  Castro, however, would NOT put Texas in play.  Hillary is already SUPER popular amongst Latinos, so that wouldn't add to much.  But he would still add diversity, as well as youth to the ticket.  The other three would all cost the Democrats a Senate seat since all three come from states with Republican governors.  Plus, two women on the ticket is, in my opinion, way too risky.