Way to be overlooked by conservative crowd (9)
I believe the answer is:
concourse
'crowd' is the definition.
(I've seen this before)
'way to be overlooked by conservative' is the wordplay.
'way' becomes 'course' (course is a kind of way).
'to be overlooked by' means one lot of letters go next to another (in a down clue, some letters go above others).
'conservative' becomes 'con' (abbreviation for Conservative).
'course' put after 'con' is 'CONCOURSE'.
(Other definitions for concourse that I've seen before include "Meeting place" , "shopping mall, say" , "A gathering of people" , "part of airport" , "crowd" .)