ORLANDO, Fla.  He has zero faith in the incoming speaker of the House, John A. Boehner, whom he calls a “tool of special interest.”

He derides the Tea Party’s successes as “bought and paid for by the enormously rich and the selfish.”

And he can barely contain distaste for his Republican successor, whose views he sums up as “bizarre fundamentalist.”

Representative Alan Grayson, a Democrat from Florida’s Eighth Congressional District, is leaving office on Wednesday much as he entered it two years ago  as the pugnaciously partisan, verbal-bomb-tossing, liberal folk hero of the 111th Congress.