Each leading (5)
I believe the answer is:
ahead
This clue is a double definition.
'each' is the first definition.
('a head' can mean 'per person')
'leading' is the second definition.
(to lead is to go ahead)
(Other definitions for ahead that I've seen before include "In the future" , "at pole" , "In front as in race" , "likely to win?" , "Forwards" .)