This Saturday, Republican presidential "wannabes" descend on Des Moines for "the fourth major, multi-candidate cattle call of the caucus campaign"

Candidate cattle calls may help cull the herd.  (Des Moines Register, 5/13/2015)

There'll be a lot of mooing goin' on.

These events can be mind-numbing for the audience, not to mention other parts of the anatomy. If all the presidential wannabes show up, that's 110 minutes of scheduled speaking time even before state officeholders and other dignitaries take their turn.

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