Capitol Democrats have informed (4)
I believe the answer is:
told
'informed' is the definition.
(telling is a kind of informing)
'capitol democrats have' is the wordplay.
'have' says the answer is hidden in the clue.
'TOLD' is hidden within 'capitol democrats'.
(Other definitions for told that I've seen before include "Authorised - broadcast" , "Assured" , "Produced effect; related" , "Informed; narrated" , "instructed" .)