Not to put too fine a point on it, but the appointment of a "party hack" as head of the CIA wouldn't exactly be unprecedented.
Also, consider that John McCone, the CIA director from 1961 to 1965, had no previous intelligence experience and yet most people seem to think he did a pretty good job.
By contrast, his predecessor Allen Dulles had extensive intelligence experience during and after WWII. As CIA director, Dulles oversaw not only the Bay of Pigs invasion but also the illegal conspiracy that kept Operation Paperclip (sneaking ex-Nazi scientists into the US with new identities) going after it officially ended in 1947.