Make certain Republican has been dropped off — follow in order (5)
I believe the answer is:
ensue
'follow in order' is the definition.
(I've seen this in another clue)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ensue that I've seen before include "Happen afterwards as a result" , "Come to pass" , "Arise" , "Occur afterwards" , "Follow later" .)