Drive a camping convertible (8)
I believe the answer is:
campaign
'drive' is the definition.
(I know that drive can be written as campaign)
'a camping convertible' is the wordplay.
'convertible' is an anagram indicator.
'a'+'camping'='acamping'
'acamping' is an anagram of 'CAMPAIGN'.
(Other definitions for campaign that I've seen before include "In election period" , "lobby" , "Electioneer" , "Promotional operation, perhaps political" , "A series of planned activities, as for advertising" .)