State bore recalled stopping Nixon regularly (5)
I believe the answer is:
idaho
'state' is the definition.
(Idaho is an example)
'bore recalled stopping nixon regularly' is the wordplay.
'bore' becomes 'had' ('have' can be a synonym of 'bear').
'recalled' shows that the letters should be reversed in order.
'stopping' indicates putting letters inside (stopping can mean blocking a gap).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'nixon' are 'io'.
'had' backwards is 'dah'.
'dah' put into 'io' is 'IDAHO'.
(Other definitions for idaho that I've seen before include "North-western US state" , "O, I had a change in this state" , "agricultural land" , "State of north-west USA" , "US state in the Rocky Mountains" .)