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A decision based on those making the most noise over a certain issue.
"Did you order the veggie pizza I wanted?"
"Nope, sausage. I had to go with the Loudest Common Denominator."
by denabee November 28, 2011
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An opinion that does not reflect the majority view but is spoken as though it does by its proponents. Opposite of silent majority.
Congressional Republicans may not have anything to offer on health care reform but they did a nice job of getting the loudest common denominator to town meetings to shout down Democrats who supported Obama's plan.

Brady Quinn was awful when he started for the Browns. Still, the loudest common denominator thinks he is going to be a good NFL QB.
by cuda75 November 14, 2009
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