Weak leaders in France entered election but lost everything (6)
I believe the answer is:
feeble
'weak' is the definition.
(I know that weak can be written as feeble)
'leaders in france entered election but lost everything' is the wordplay.
'leaders in' indicates taking the first letters.
The initial letters of 'france entered election but lost everything' is 'FEEBLE'.
(Other definitions for feeble that I've seen before include "Very weak, infirm" , "Very weak, without strength" , "lacking resolve" , "rather weak" , "Paltry" .)