Cryptic crossword clue
List of constituents each with large, smooth cut by Hannibal 9,4

The most common and most likely answer to this crossword clue is the 9 plus 4 letter word ELECTORAL ROLL

I've seen this crossword clue in The Guardian
E
L
E
C
T
O
R
A
L
R
O
L
L

Buddy explains!

The straight part
We know that "List of constituents" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case list of constituents = electoral roll.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

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