Model European member of parliament left in gallery (8)
I believe the answer is:
template
'model' is the definition.
(template is a kind of model)
'european member of parliament left in gallery' is the wordplay.
'european' becomes 'e' (abbreviation e.g. EU).
'member of parliament' becomes 'mp' (I've seen this in other clues).
'left' becomes 'l' (common abbreviation**).
'in' indicates putting letters inside.
'gallery' becomes 'tate' (I've seen this before).
'e'+'mp'+'l'='empl'
'empl' going into 'tate' is 'TEMPLATE'.
(Other definitions for template that I've seen before include "Preset file or document format" , "Shape serving as model" , "Pattern, model" , "Shaped pattern" , "Something used as a pattern" .)