Crestfallen as Democrat is elected (12)
I believe the answer is:
disappointed
'crestfallen' is the definition.
(thesaurus)
'democrat is elected' is the wordplay.
'democrat' becomes 'd'.
'elected' becomes 'appointed'.
'd'+'is'+'appointed'='DISAPPOINTED'
'as' is the link.
(Other definitions for disappointed that I've seen before include "Unhappy" , "Sad and let-down" , "Let-down, frustrated" , "Let down" , "Saddened" .)