List of political metaphors

This is a list of common political metaphors.

eminence grise: literally, "grey man," from French. Colloquially, the power-behind-the-throne. An official close to the president or monarch who has so much power behind the scenes that he or she may double or serve as the monarch.
figurehead: a leader whose powers are entirely symbolic, such as a constitutional monarch.
puppet government: a government that is manipulated by a foreign power for its own interests
star chamber: a secretive council or other group within a government that possesses the actual power, regardless of the government's overt form.

blank check: legislation which is vaguely worded to the point where it can be widely exploited and abused
grandfather clause that allows a piece of legislation to not apply to something old or incumbent
poison pill a provision in an act or bill which defeat or undermines its initial purpose, or which make it politically unacceptable.
pork barrel legislation or patronage: acts of government that blatantly favor special interest groups.
rider that attaches something new or unrelated to an existing bill
sunset clause to prevent legislation from being permanent

character assassination: spreading (usually) manufactured stories about a candidate with the intent to destroy his or her reputation in the eyes of the public.
dark horse: a candidate who is largely ignored by opponents yet makes significant gains.
landslide victory: a huge victory for one side.
muckraking: uncovering and publicizing scandalous information about a person or organization
mudslinging: harsh partisan insults exchanged between candidates
parachute candidate / carpetbagger: a candidate who runs for election in an area which he or she is not a native resident or has no ties.
paper candidate: a candidate who puts no effort into his campaign and is essentially just a name on the ballot
riding coattails: victories by local or state politicians because of the popularity of more powerful politicians
sacrificial lamb: a candidate who is put forward to run for office, by his party or others, but who has no chance of winning
stalking horse: a perceived front-runner candidate who unifies his or her opponents, usually within a single political party.

a wedge issue which turns members of a party against each other
third rail: an issue which is so controversial, pursuing it or even attempting to address it could end one's political career
straw man: the practice of refuting an argument that is weaker than one's opponent actually offers, or which he simply has not put forth at all. A type of logical fallacy
a sacred cow: an institution which few dare question, because it is so revered

Government in the sunshine: a government which keeps all its records and documents open and easily accessible by the public.
lame duck: a politician who has lost an election, or who is serving his last term in an office where the law limits the number of times he may succeed himself, and is simply waiting for his term to expire.
melting pot: a society in which all outsiders assimilate to one social norm.
salad bowl: a society in which cultural groups retain their unique attributes (opposite of melting pot theory).
Spin (public relations), a heavily biased portrayal of an event or situation.
witch hunt: a hysterical pursuit of political enemies