Candidates as LofR Characters

NRO has this item:

Howard Dean: Gimli. Short-tempered, easily provoked, and well... short

John Kerry: Saruman. Slick, strangely exotic, conjuring, confident to a fault, and well... tall

John Edwards: Tom Bombadil (not in the films). Awkwardly optimistic, gleeful, dancing, and well... not in the movie.

Lieberman: Treebeard. Methodic, consistent (in relation to his peers), and well... slooow.

Clark: Gollum. Schizophrenic, perceptively deranged, and well... look at him.

Kucinich: Not sure. One of the Trolls?