The most common and most likely answer to this crossword clue is the 10 letter word ELECTORATE
I've seen this crossword clue in Financial Times
E
L
E
C
T
O
R
A
T
E
More clues leading to the result ELECTORATE
- Old prince at graveside finally choosing body
- Everyone choosing Princess to accept love note
- Attlee gets involved with core group of voters
- Voters potentially have online reader worried
- Academic worried by Burke or Hare finally choosing body
- Voters to create panic after conclusion of Article 50
- The people prefer no local tax
- Figures on register required for returns?
- Teacher’s briefly taken lunch outside – they’re on roll
- German ruler once took in voters
Buddy explains!

The straight part
We know that "they’re on roll" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case they’re on roll = electorate.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.
What does ELECTORATE mean?
ELECTORATE noun- The dominion of an Elector in the Holy Roman Empire.
- The collective people of a country, state, or electoral district who are entitled to vote.
- The geographic area encompassing an electoral district.