Popular books about voting system — one still being published? (2,5)
I believe the answer is:
in print
'still being published?' is the definition.
'popular books about voting system one' is the wordplay.
'popular' becomes 'in'.
'books' becomes 'nt' (New Testament).
'about' says to put letters next to each other.
'voting system' becomes 'pr' (I've seen this in other clues).
'one' becomes 'i' (Roman numeral).
'pr'+'i'='pri'
'nt' put after 'pri' is 'print'.
'in'+'print'='IN PRINT'
(Other definitions for in print that I've seen before include "available from publisher" , "(Of book) available" , "Published" .)