Two groups of politicians to accommodate or a lot of researchers here (12)
I believe the answer is:
laboratories
'lot of researchers here' is the definition.
'two groups of politicians to accommodate or a' is the wordplay.
'two groups of' becomes 'lab' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'politicians' becomes 'tories' (I've seen this in other clues).
'to accommodate' indicates putting letters inside.
'lab'+'tories'='labtories'
'or'+'a'='ora'
'labtories' going around 'ora' is 'LABORATORIES'.
Can you help me to learn more?
(Another definition for laboratories that I've seen is " Rooms for scientists".)