Refuse to recognise the campaign or endorse the selection (6)
I believe the answer is:
ignore
'refuse to recognise' is the definition.
(I've seen this in another clue)
'the campaign or endorse the selection' is the wordplay.
'IGNORE' is hidden in amongst the letters.
However, I'm uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for ignore that I've seen before include "'Disregard, overlook (6)'" , "Pay no attention to, disdain" , "Pass over" , "Fail to observe" , "Send to Coventry" .)