We've only ignored leaders in an equal manner (6)
I believe the answer is:
evenly
'in an equal manner' is the definition.
(I know this)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for evenly that I've seen before include "avoiding hiccups?" , "without disruption?" , "at regular intervals" , "in regular fashion" , "on an equal footing" .)