Places where one may research political party, or a group from the opposite side (12)
I believe the answer is:
laboratories
'places where one may research' is the definition.
The definition and answer are not the same part of speech. However, I know that 'research' relates to this answer.
'political party or a group from the opposite side' is the wordplay.
'political party' becomes 'lab' (abbreviation for Labour Party).
'group from the opposite side' becomes 'tories' (I can't justify this - if you can you should believe this answer much more).
'lab'+'or'+'a'+'tories'='LABORATORIES'
Can you help me to learn more?
(Another definition for laboratories that I've seen is " Rooms for scientists".)