Yes, Hawaii Republicans are destined to become irrelevant but it is not for the reasons cobbled by CB. Judicial overreach, editorial censorship and the stranglehold Democrats have on Hawaii life are the cause. Merely saying you are a Republican subjects you to scorn. Trying to do business here as a Republican? Do not tell anyone you are a Republican because it is the Kiss of death

Hawaiians and Hawaii Residents may Believe that Obama did a great job because of his positive press coverage and the squelching of any negative coverage. 
Republicans Know that Obama was a colossal failure by just about every measure in spite of press spin. 

Further, in Hawaii there is a legitimate reluctance to identify as a Republican or conservative. Understandable since Republicans believe in fiscal responsibility and here in Hawaii that is a no-no. Example the Rail project chugs merrily along yet it is seen by many as the embodiment of incompetence,  cronyism, waste and some would say corruption.