Answer: freshmansenator

AnswerCrossword Clue
FRESHMANSENATORNewcomer to the Hill
FRESHMANSENATORNewcomer to Capitol Hill
FRESHMANSENATORCongressional newbie
FRESHMANSENATORObama in '08
FRESHMANSENATORJFK, in '53
FRESHMANSENATORBarack Obama, 2005-08, e.g.
FRESHMANSENATORCongressional rookie
FRESHMANSENATORCapitol neophyte