I don’t think he has a prayer of getting the Democrat nomination, barring some political earthquake, but is he really running for running mate?
That would be interesting, if he actually became Vice President, because, traditionally, the Veep is in charge of the space program in the White House (Cheney has actually been one of the most hands off in this regard in years). And Richardson has been very supportive of NewSpace (at least partly because of all the hype over Spaceport New Mexico), so that could actually result in some useful changes of direction for NASA.
Not that I’m thrilled in general about a Dem in the White House, of course.