True Democrat, European went to the polls (7)
I believe the answer is:
devoted
'true' is the definition.
(I've seen this in another clue)
'democrat european went to the polls' is the wordplay.
'democrat' becomes 'd'.
'european' becomes 'E' (abbreviation e.g. EU).
'went to the polls' becomes 'voted' (I've seen this in another clue).
'd'+'e'+'voted'='DEVOTED'
(Other definitions for devoted that I've seen before include "Dedicated or wholly given up to" , "Strongly attached (to)" , "Faithful" , "Loving and loyal" .)