He 'registered as' a Republican. = He 'is registered' (to vote) 'as' a Republican.
The students 'registered for' classes. [=the students enrolled in classes]
The team finally 'registered' a victory after losing three games in a row.
(..) of this investigation. You don't let anybody breathe. You're acting like you lost your mind. What is it with these two birds? Interpol just registered a new flight plan from Le Bourget. Stay out of my way on this, Collet. Did you kill Jacques Sauni're? Did you kill Jacques Sauni're? (..)2006 The Da Vinci Code