My own immediate reaction is that the husband of the Crown Princess should stay out of party politics - and I would be interested to know what informed his decision to run for elected office. It is extremely unlikely to have been taken without the permission of the King.
That aside, I think Prince Radu is an exceptional person - his sense of service, his commitment, his honesty and decency are in the best traditions of the royal house. A minority have subjected him to a relentless barrage of ill informed criticism - including the most absurd and offensive snobbery from some so-called 'royalists'. One can only wish him the best of luck. I suspect he will need it.