straw poll

An extremely unorganized form of voting, usually used by self-appointed leaders when they don't have the desire to actually consider what the group wants but need to make it look like it was a majority decision.

Intramural captain: "Okay dudes, who can make it Monday to practice? Quick straw poll!" (two people out of thirty raise their hands)
Captain: "Monday it is!"
Guy #1: "90% didn't vote."
(Captain shoots Guy #1 in the face.)