The shutdown poll numbers for Republicans are dreadful. The media coverage, even from conservative opinion leaders, is even worse.

In fact, two weeks into the standoff, the real challenge for writers is coming up with sufficiently novel comparisons for the GOP ultras who started the whole thing: Even the most far-fetched analogies have already been spoken for.

Here's a brief guide:

Colonel Walter E. Kurtz

cliff1066/Flickr

“‘They told me,' Martin Sheen’s Willard says to Marlon Brando’s Kurtz in Apocalypse Now at the end of a long journey up the river, ‘that you had gone totally insane, and that your methods were unsound.’” -Ross Douthat, New York Times.

V.I. Lenin

Albert Rhys Williams/Through The Russian Revolution

“It’s a pure Leninist strategy — heighten the contradictions to help hasten the collapse they are certain is inevitable.” -Jonathan Chait, New York

Leon Trotsky

BBC Archives

“The Tea Party’s takeover of congressional Republicans is happening so thoroughly that even Trotsky, a revolutionary whose supporters advocated radicals joining and capturing more moderate parties, might have blushed.” -Richard McGregor, Financial Times

The Weather Underground

Streetlog

“The current crop of congressional Republicans have more in common with the Weather Underground of the 1960s than they do with traditional Republicans, including the man they claim to venerate, Ronald Reagan.” –David Horsey, Los Angeles Times

Maoists

Richard Fisher/Flickr

“It is scary that the art of governance appears to be dying out, partly a victim of the GOP's Cultural Revolution.” –Michael Hirsh, National Journal

The American (Know-Nothing) Party

Latinamericanstudies.org

“The swift demise of one half of the Whig Party split should be a sobering lesson for Republicans even beyond the near certainty that Democrats would clean up against a divided opposition in the immediate aftermath of a split.” -Paul Rosenberg, Salon

Sonny Corleone

Flickr

“On one side we have Sonny, the hotheaded, impulsive, shoot-now-take-names-later son of Don Corleone. On Capitol Hill, he personifies the tea party followers who would rather die on principle than live to win a later day.” –Kathleen Parker, The Washington Post

Osama Bin Laden

Canada Free Press

"That would be Ted Cruz, the Texas senator who grabbed headlines by speaking for 21 hours against Obamacare. Cruz is neither Michael nor Sonny but the star of his own movie. He’s Ted bin Laden — the guy who hands out suicide vests and then goes to lunch." –Kathleen Parker, The Washington Post

The Jacobins

Trancredi Scarpelli/Look and Learn Category History

"No doubt, Boehner would prefer not to have to contend with such a mess. But he's already dealing with a historic muddle caused by his own Jacobins." –David Corn, Mother Jones

The John Birch Society

U.S. Library of Congress

“When Robert Welch and his John Birch Society continued to allege that establishment conservatives were in cahoots with the Soviet Union, Buckley essentially ejected them from the conservative movement….The question is whether the conservative movement of today will remember that lesson.” –Christopher Parker, The Monkey Cage